Star Wars Knights of the Old Republic II: The Sith Lords/Combat

Attack

Attacks with weapons cannot normally hit and subsequently damage an opponent unless an attack roll is equal to or greater than that opponent's Defense. An attack roll is the sum of the roll of a twenty-sided die (d20) and all attack bonuses and penalties. According to the Combat log, a minimum d20 roll (1) is an automatic miss while a maximum d20 roll (20) is an automatic hit (and Critical Threat), so chance to hit has a minimum of 5% and a maximum of 95% regardless of whether or not the total attack roll would equal or exceed defense.

Maximum 95% chance to hit is achieved when the sum of 2 (the lowest d20 roll that isn't an automatic miss) and attack bonuses and penalties is equal to or greater than the target's defense.

All characters have a base attack bonus equal to their character or class level(s). Although enemies normally only have class level 1 and thus base 1, they receive a bonus to this based on your main character level:

Set 1 and Set 2	Set 3	Set 4	Set 5
roundup(main level * 0.9) - 1	roundup(main level * 0.95) - 1	main level	rounddown(main level * 1.1)

Dual Wield Penalty

Using two weapons or a double-bladed weapon normally incurs an attack penalty, which depends on whether or not the attacker has any Two-Weapon Fighting feat and a balanced weapon (which adds Small Offhand Bonus 2 to the attack(s) of the main hand):

Feat	Unbalanced		Balanced
	Main hand	Off hand	Main hand	Off hand
None	-6	-10	-4	-10
Two-Weapon Fighting	-6	-6	-4	-6
Improved	-4	-4	-2	-4
Master	-2	-2	0	-2

All blaster pistols, Double-Bladed Lightsabers and double-handed melee weapons are balanced, as are all Short Lightsabers, short swords and vibroblades in the off hand.

Once Two-Weapon Fighting has been mastered, the Jedi Weapon Master and Sith Marauder Prestige classes can then select Superior Two-Weapon Fighting to reduce this attack penalty even further:

Two-Weapon Fighting	Unbalanced		Balanced
	Main hand	Off hand	Main hand	Off hand
Superior I	-1	-2	+1	-2
Superior II	0	-2	+2	-2
Superior III	0	-1	+2	-1

Feats

Some feats add a bonus to, or inflict a penalty on, the attack roll:

Feat	Base	Improved	Master
Power Blast	-3
Rapid Shot	-4	-2	-1
Power Attack	-3
Flurry	-4	-2	0

Feat	Base	Improved	Master
Force Jump		+2	+4
Dueling	+1	+2	+3
Dual Strike	+2	+4	+6
Weapon Focus	+1

All Prestige classes are granted Weapon Focus: Lightsaber and can select Weapon Specialization: Lightsaber, but only a Jedi Weapon Master or Sith Marauder can then select Superior Weapon Focus: Lightsaber.

Superior Weapon Focus	Lightsaber I	Lightsaber II	Lightsaber III
Weapon Focus Bonus	+1	+2	+3

Ranged

Bonuses can be added to the attack roll for close proximity ranged attacks, and melee attacks on ranged attackers, depending on whether or not the attacker, or defender, has any Close Combat feat:

Feat	None	Close Combat	Improved
Close Proximity Ranged Bonus		+1	+2
melee on ranged	+6	+4	+2

Close Combat is granted to level 4 Scouts, but these feats can be selected by all classes except Prestige classes.

Scouts are also granted Targeting feats, which add an attack bonus when using blaster pistols and rifles:

Targeting	I	II	III	IV	V	VI	VII	VIII
Scout level	1	5	9	13	17	21	25	29
Ranged attack	+1	+2	+3	+4	+5	+6	+7	+8

Lightsaber form

Some lightsaber forms add a bonus to the attack roll:

Determination (Shii-Cho)	Contention (Makashi)	Perseverance (Shien)	Moderation (Niman)
+1	+3 (vs lightsaber)	+2	+1

Attribute modifier

Strength mod(ifier) is normally added to the attack roll when using melee weapons and lightsabers.

Dexterity mod(ifier) is added to the attack roll when using ranged weapons. If greater than strength mod, then it can be added to melee attack rolls instead of Strength modifier after selecting the Finesse: Melee Weapons feat, and to lightsaber attack rolls after selecting either of the Finesse: Melee Weapons or Lightsaber feats.

Player Charisma Modifier is also added to your party's attack rolls, but not your own.

Effect Bonus

Some weapons and items add an effect bonus or penalty to the attack roll, as do some Force powers and stimulants:

Force power	Effect Bonus
	User	Party	Enemy
Battle Meditation	+2	+2
Improved	+2	+2	-2
Master	+4	+4	-4
Inspire Followers	+(1-5)	+(1-5)
Crush Opposition			-(1-5)
Slow			-2

Stimulant	Effect Bonus
	User	Party	Enemy
Battle Stimulant	+1
Hyper-battle Stimulant	+2
Echani Battle Stimulant	+3
On Hit	Effect Bonus
	User	Party	Enemy
Slow			-2

Critical Threat

As well as resulting in an automatic hit, an attack roll with a maximum d20 roll (20) results in an automatic Critical Threat. This threat roll is effectively a second attack roll which can result in a Critical Hit, multiplying damage rolls and bonuses when equal to or greater than an opponent's Defense. However, unlike an attack roll, a threat roll cannot automatically miss (roll 1) or hit (roll 20) so conversion of critical threats to critical hits can be 0% (roll 20 + Attack < Defense) and 100% (roll 1 + Attack ≥ Defense).

Ferocity (Juyo) lightsaber form adds 4 to the threat roll, although the only indication of this in the Combat log's Threat Breakdown is if there's threat success with Attack < Defense (for example, threat success with Attack 40 vs Defense 44; without this form, success would require at least Attack = Defense, or 44).

Unarmed attacks have Critical Threat: 20-20,x2 but some weapons have a higher Critical Threat range, increasing the chance of a roll within that range:

Threat	20-20 (5%)		19-20 (10%)	18-20 (15%)
Keen	19-20 (10%)		17-20 (20%)	15-20 (30%)
Ranged weapons	Blaster pistols Heavy blasters Ion blasters (x3) Sonic pistols	Ion rifles (x3) Blaster carbines Sonic rifles (Heavy) repeaters	Hold out blasters Bowcasters (x3) Blaster rifles	Disruptor pistols Disruptor rifles
Melee weapons	Stun batons Short swords Gamorrean battleaxes Long swords	Double-Bladed Lightsaber Quarterstaffs and Force pikes Double-Bladed Sword Vibro double-blades Freyyr's Warblade	Lightsaber Short Lightsaber Vibroblades Vibroswords

The Keen bonus can increase base Critical Threat range, as can the Critical Strike and Sniper Shot feats. According to the Combat log, any Keen bonus is additive with feat bonuses, resulting in the following:

Feat	Critical Threat			Keen
	20-20 (5%)	19-20 (10%)	18-20 (15%)	19-20 (10%)	17-20 (20%)	15-20 (30%)
Critical Strike / Sniper Shot	19-20 (10%)	17-20 (20%)	15-20 (30%)	18-20 (15%)	15-20 (30%)	12-20 (45%)
Improved	18-20 (15%)	15-20 (30%)	12-20 (45%)	17-20 (20%)	13-20 (40%)	9-20 (60%)
Master	17-20 (20%)	13-20 (40%)	9-20 (60%)	16-20 (25%)	11-20 (50%)	6-20 (75%)

Resilience (Soresu) lightsaber form can then decrease weapon Threat range by 1 (5%) to minimum 20-20 (5%), while Aggression (Ataru) lightsaber form increases it by 1 (5%) to maximum 10-20 (55%) using a Keen (Short) Lightsaber with Master Critical Strike.

Defense

Characters can only be hit and subsequently damaged by attacks with weapons when an attack roll is equal to or greater than defense. An attack roll is the sum of the roll of a twenty-sided die (d20) and all attack bonuses and penalties. According to the Combat log, a minimum d20 roll (1) is an automatic miss while a maximum d20 roll (20) is an automatic hit (and Critical Threat), so chance to hit has a minimum of 5% and a maximum of 95% regardless of whether or not the total attack roll would equal or exceed defense.

Minimum 5% chance to hit is achieved when the sum of 19 (the highest d20 roll that isn't an automatic hit) and the attacker's attack bonuses and penalties is less than defense.

Defense breaks down as follows in the Combat log:

• base
• armor

• dex mod
• class

• natural
• feats and effects mod

• feat (Dueling)
• debilitated penalty

All characters start with base 10 defense.

Armor

Body armor adds to defense, but it can also restrict how much of a character's dex(terity) mod(ifier) is added as well: for example, an armor displaying Max Dexterity Bonus: +5 restricts defense added by dex mod to +5, even when it's greater than +5.

Defense Bonus	Jedi armor	Light armor		Medium armor		Heavy armor
Armor	3	4	5	6	7	8	9
Max Dexterity Bonus	4	5	4	3	2	1	0

The Miner Uniform has armor 1, but no Max Dexterity Bonus.

Any remaining Defense Bonus is added to feats and effects mod. Some armors have higher Max Dexterity Bonus, and underlays can increase it for any heavy armor:

Light armor	Bonus
Electromesh Suit	+7 (5 + 2)

Medium armor	Bonus
Sith Battle Suit	+7 (3 + 4)
Electromesh Armor	+6 (2 + 4)

Heavy armor	Bonus
Flex Heavy Armor	+3 (0 + 3)
Felenar Armor	+4 (0 + 4)

Flexible Underlay Mark
I	II	III	IV	V
+1		+2		+3

Otherwise, dex mod is unrestricted when unarmored (unclothed, or wearing clothing or robes with no Max Dexterity Bonus specified).

Class

All classes except the Scout and Tech Specialist are granted a defense bonus which can increase on level up:

Classes	Feat	Level 1	Bonus
Soldier and Minion	Mandalorian Courage	0	2 * [ (Level + 1) / 6]
Scoundrel and Droid	Scoundrel's Luck or Logic Upgrade	2	2 * [ (Level + 1) / 6]
Jedi	Jedi Sense	2	2 * [Level / 6]
Jedi Master and Sith Lord	Prestige Sense	2	2 * [Level / 8]
Other Prestige classes	Greater Prestige Sense	2	2 * [Level / 5]

Although this bonus is normally attributed to a feat, it's entirely dependent on class: for example, Disciple, Handmaiden and Mandalore are all granted the same bonus as all are Soldiers, even though only Mandalore has the Mandalorian Courage feat.

Classes are granted this bonus at the following levels:

Class bonus	2	4	6	8	10	12	14	16	18
Soldier and Minion	5	11	17	23	29	35	41	47
Scoundrel and Droid	1	5	11	17	23	29	35	41	47
Jedi	1	6	12	18	24	30	36	42	48
Jedi Master and Sith Lord	1	8	16	24	32
Other Prestige classes	1	5	10	15	20	25	30	35

Although enemies normally only have class level 1, a defense bonus is added to any class bonus based on your main character level:

Set 1	Set 2	Set 3	Set 4	Set 5
rounddown(main * 0.6)	roundup(main * 0.7) - 1	rounddown(main * 0.8)	roundup(main * 0.9) - 1	main level

Some characters, like HK-47, are also granted a natural bonus.

Feats and effects

The Combat log sums defense bonuses and penalties from the following under feats and effects mod:

Feats	Base	Improved	Master
Rapid Shot	-4	-2	-1
Sniper Shot	-5
Flurry	-2	-1	0
Critical Strike	-5
Wookiee Rage	Rage -2	Fury -4	Frenzy -6
On Hit	Droid Repulsor		Other
Slow(ed)	-4		-2

Force powers	Base	Improved	Master
Burst of Speed	Burst +2	Knight +4	Master +4
Force Aura	Aura +2	Shield +4	Armor +6
Slow	-2
Fury	-2	-4	-6
Force power	Stun	Stasis	Field
Saved	-4

Armor and other items can also have defense bonuses and penalties added to feats and effects:

Items		Value
Body	Robes	0 - +4
	Light armor	-1 - +3
	Medium armor	0 - +4
	Heavy armor	0 - +4
	Handmaiden's Robe	+3
	Atton's Ribbed Jacket	+4
	Mira's Ballistic Mesh Jacket	+5
Implants	Quickness D-Package	+1
Head	Absorption Visor	+1
	Shielding Visor
	Arkanian Blinders
	Consciousness Helm
	Enhanced Shielding Visor	+3
Hands	Czerka Defensive Gauntlets	+1
	Gamorrean Power Gauntlets
	Gamorrean Wargloves	+3
Armbands	Ludo Kressh's Armband	+1
Belts	Inertial Inhibitor	+1
	Frozian Scout Belt
Melee	Handmaiden's Staff	+1

Upgrade items		Value
Armor	Ablative Plating	+1
	Bonded Plates	+(1-3)
	Heavy Bonded Plates	+(2-4)
Ranged	Mandalorian Chamber Mark II	-2
	Mandalorian Chamber Mark I / III	-1
Melee	Advanced Zabrak Grip	-2
	(Superior) Zabrak Grip	-1
	Basket Hilt	+1
	Advanced / Superior Nagai Grip
	Advanced / Superior Basket Hilt	+2
Lightsaber	Phobium Emitters	-3
	Refined Phobium Emitter	-1
	Disrupting Emitters
	Improved / Expert Deflection Emitter	+1
	Fencing Emitter
	Improved / Expert Fencing Emitter	+2
	Vibration Lenses	-1
	Lorrdian Gemstone	+2

Feats and effects from all of the above are restricted to maximum 10: for example, a Jedi using Master Speed (+4) and Force Armor (+6) with Ossus Keeper Robe (+1) and two Lightsabers with Expert Fencing Emitters (+2 each) only receives a defense bonus of 10, not 15.

However, this also means that penalties can be incurred without reducing defense, since they can be offset by any excess: for example, for that same Jedi it makes no difference if Critical Strike (-5) is used since the defense bonus is 10 in either case (15 is restricted to 10, or 15 - 5 = 10).

The following are also added to feats and effects, but they are not restricted to maximum 10:

Lightsaber forms	Defense	vs Current Target
Determination (Shii-Cho)	+3	-3
Resilience (Soresu)		+2
Aggression (Ataru)	-2	+5

Lightsaber forms	Defense	vs Current Target
Perseverance (Shien)		-5
Moderation (Niman)	+1
Ferocity (Juyo)	-4	+2

Defense and Defense vs Current Target bonuses and penalties are cumulative:

Lightsaber Form	Determination (Shii-Cho)	Aggression (Ataru)	Ferocity (Juyo)
Defense vs Current Target	0 (+3 - 3)	+3 (-2 + 5)	-2 (-4 + 2)

Defense bonuses vs a particular enemy damage type or alignment are added to feats and effects without restriction:

Item		Restriction	Defense
Underlays	Durasteel Underlays	vs Bludgeoning, Piercing, Slashing	+(1-5)
Armband	Nomi's Armband	vs Dark Side	+1

Wisdom modifier is also added to feats and effects without restriction for a male character with Battle Precognition, as long as he's not wearing anything with an armor value.

So feats and effects can exceed maximum 10 in these cases: for example, a Jedi using Master Speed (+4) and Force Armor (+6) with Ossus Keeper Robe (+1) and two Lightsabers with Expert Fencing Emitters (+2 each) and Resilience (Soresu) lightsaber form (+2 vs current target) receives a defense bonus of 12 (min(15, 10) + 2) vs current target.

However, this also means that any subsequent penalties cannot be offset by any excess: for example, if that same Jedi uses Perseverance (Shien) lightsaber form (-5 vs current target) instead, the defense bonus is 5 (min(15, 10) - 5) vs current target.

Any Dueling bonus is listed separately as feat:

Feat	Base	Improved	Master
Dueling	+1	+2	+3

Debilitated penalty

Debilitated penalty results in -4 defense whenever a target is debilitated by any of the following:

Feats	Force powers	Equipment
Critical Strikes Sniper Shots	Stun and Stasis (Field) Stun, Disable and Destroy Droid Force Push, Whirlwind and Wave Fear, Horror and Insanity Wound, Choke and Kill	Plasma, Concussion and CryoBan Grenades Flash mines On Hit: Horror, Stun and Paralyze

Being debilitated also means Dexterity modifier isn't added to defense or Reflex save (although Wisdom modifier can still be added to defense by Battle Precognition), and debilitated droids have saves reduced by 2. Characters may avoid being debilitated with a successful save, Immunity: Stun, Fear, Horror, Force Resistance, or Force Immunity feats.

Damage

A successful attack can inflict damage, reducing Vitality. Melee weapons inflict physical damage of different types:

Bludgeoning		Piercing		Slashing
Weapon	Damage	Weapon	Damage	Weapon	Damage	Weapon	Damage
Stun batons	1	Short swords	1-6	Long swords	1-12	Wookiee warblade	1-10
Unarmed	1-4	Vibroblades	1-10	Gamorrean battleaxes	1-12	Double-Bladed Sword	2-12
Quarterstaffs	1-6			Vibroswords	2-12	Vibro double-blades	2-16
Force pikes	1-12

Creatures armed with claws also inflict slashing damage. However, the Combat log's Damage Breakdown usually labels any physical damage as slashing, even when it's bludgeoning or piercing.

Lightsabers and most ranged weapons inflict energy damage:

Lightsabers	Damage	Blaster pistols	Damage	Blaster rifles	Damage	Blaster rifles	Damage
Short Lightsaber	2-16	Hold out blasters	1-4	Bowcasters	1-10	Repeating blasters	2-12
Lightsaber	2-20	Blaster pistols	1-8	Blaster carbines	1-12	Heavy repeating blasters	2-16
Double-Bladed	2-24	Heavy blasters	1-10	Blaster rifles	1-12

However, some ranged weapons don't:

Unstoppable		Sonic		Ion
Weapon	Damage	Weapon	Damage	Weapon	Damage	vs Droid
Disruptor pistols	1-6	Sonic pistols	1-4	Ion blasters	1-6	+1-10
Disruptor rifles	1-10	Sonic rifles	1-10	Ion rifles	1-10	+1-10

How much damage is inflicted is normally determined by the roll of a virtual numbered die or dice, which can be expressed with the notation XdY, where X is the number of dice with Y sides rolled:

Damage	1-4	1-6	1-8	1-10	1-12	2-12	2-16	2-20	2-24
Notation	1d4	1d6	1d8	1d10	1d12	2d6	2d8	2d10	2d12

Minimum total roll is X, while the maximum is X * Y. The more dice are rolled, the more likely the total will approach the average.

+	1	2	3	4	5	6
1	2	3	4	5	6	7
2	3	4	5	6	7	8
3	4	5	6	7	8	9
4	5	6	7	8	9	10
5	6	7	8	9	10	11
6	7	8	9	10	11	12

For example, although a Long Sword inflicts slightly less damage (1-12 or 1d12) than a Vibrosword (2-12 or 2d6), it is equally likely to roll 1, 7 or 12 (1/12 chance each), whereas the Vibrosword is far less likely to roll 2 or 12 (1/36 chance each) but far more likely to roll 7 (1/6 chance).

Enemy base or weapon damage rolls then receive a multiplier based on your main character level:

Set	Damage multiplier	Minimum main level for damage multiplier
		1	2	3	4	5	6	7	8	9
Set 1	max(roundup((main level - 1) * 0.065); 1)	1	17	32	48
Set 2	max(roundup((main level - 1) * 0.09); 1)	1	13	24	35	46
Set 3	max(roundup((main level - 1) * 0.11); 1)	1	11	20	29	38	47
Set 4	max(roundup((main level - 1) * 0.135); 1)	1	9	16	24	31	39	46
Set 5	max(roundup((main level - 1) * 0.175); 1)	1	7	13	19	24	30	36	42	47

Subsequent damage bonuses are simply added, not multiplied (although they may still be multiplied by a Critical Hit).

More advanced weapons of the same type can have additional bonuses, both set or die rolls, of the same or different damage type(s), like cold, fire, dark side and light side. Some damage types may seem to be associated with specific secondary effects:

• Cold damage and On Hit: Paralyze can both be inflicted by carbonite projectors and CryoBan Grenades.
• Fire damage and On Hit: Horror can both be inflicted by flame throwers and Plasma Grenades.
• Ion blasters and rifles have additional ion damage rolls versus droids, and Ion Grenades inflict triple damage on them.
• Sonic damage and On Hit: Attribute Damage Dexterity can both be inflicted by sonic pistols and rifles, Sonic Grenades and sonic mines.

However, this is not actually the case. For example:

• An Echani Vibrosword (Damage Bonus: +2 Cold) does not paralyze.
• A Plasma Torch (Damage Bonus: +1-6 Fire) does not inflict Horror.
• Droid Ion Strikers and Blasts inflict the same ion damage on organics as droids.
• A Sith Tremor Sword (Damage Bonus: +3 Sonic) inflicts no Attribute Damage Dexterity.

The only difference damage type makes is which Damage Immunity, Shields and Damage Resistance take effect.

Although the following damage bonuses are listed separately in the Damage Breakdown, they're always added to weapon damage and are thus the same type:

• Strength mod(ifier) (melee weapons, lightsabers and off-hand blaster pistol only)
• Weapon Specialization
• Bonus damage (including Massive Criticals bonuses)
• Misc. effect damage
• Sneak Attack

Bonus damage

Bonus damage is normally added by feats:

Feat	Attack type			Bonus damage
	Ranged	Melee	Unarmed	I	II	III	IV	V	VI	VII	VIII
Precise Shot	Yes	No	No	1	2	4	6	8
Inc. Combat Damage	Yes	Yes	Yes	2	4	6
Inc. Melee Damage	No	Yes	Yes	2	4	6
Unarmed Specialist	No	No	Yes	1-4	2-8	3-12	4-16	5-20	6-24	7-28	8-32
Echani Strike	No	No	Yes	1-4	2-8	3-12

It can also be added by a Force power and a lightsaber form:

Source	Description	Attack type			Bonus damage
		Ranged	Melee	Unarmed	Base	Improved	Master
Feats	Power Blast	Yes	No	No	3	7	12
	Power Attack	No	Yes	Yes	3	7	12
	Force Jump	No	Lightsaber	No		2	4
	Wookiee Rage	Yes	Yes	Yes	0-6
Force power	Fury	Yes	Yes	Yes	0-6
Lightsaber form	Contention (Makashi)	No	Lightsaber	No	3

The sum of this bonus damage is multiplied by a Critical Hit, then any Massive Criticals bonuses are added.

Electricity damage from Bao-Dur's Strike feats is added to his unarmed attacks separately, after the Combat log's Damage Breakdown, as is unstoppable damage from HK-47's Assassin Protocols.

Misc. effect damage

According to the Combat log's Damage Breakdown, the following Force powers and stimulants add (or subtract) misc. effect damage:

Force power	Misc. effect damage
	User	Party	Enemy
Battle Meditation	+2	+2
Improved	+2	+2	-2
Master	+4	+4	-4
Inspire Followers	+(1-5)	+(1-5)

Stimulant	Misc. effect damage
	User	Party	Enemy
Battle Stimulant	+1
Hyper-battle Stimulant	+2
Echani Battle Stimulant	+3

Misc. effect damage is not multiplied by a Critical Hit, and neither is Sneak Attack damage.

Critical Hit

A Critical Hit is triggered when the d20 roll of a successful attack roll is within the weapon's Critical Threat range, and then a second attack or threat roll is also successful. This results in a multiplication of weapon damage rolls, bonuses and penalties. Critical Multiplier is normally x2, but each of the following can increase this by 1, to x3:

Source	Description
Blaster pistols	Ion blasters
Blaster rifles	Bowcasters
	Ion rifles

Source	Description
Feats	Power Blast
	Power Attack
Lightsaber forms	Perseverance (Shien)

Critical Multiplier x4 is possible when using Power Blast with a bowcaster, ion blaster or rifle, or Power Attack with Perseverance (Shien) lightsaber form.

However, the following are not multiplied by a critical hit:

• Set item bonuses (like an Ultimate Diatium Energy Cell's Damage Bonus: 5, Energy)
• Misc. effect damage
• Sneak Attack damage

Any Massive Criticals bonuses are only added to bonus damage on a Critical Hit, and not multiplied by it.

Taking chance to hit (attack roll success), Critical Threat and critical conversion (threat roll success) into account, the chance of any hit becoming a Critical Hit is as follows:

Roll success		Critical Threat
Attack	Threat	20	19	18	17	16	15	14	13	12	11	10	9	6
95%	100%	5%	10%	15%	20%	25%	30%	35%	40%	45%	50%	55%	60%	75%
95%		4.75%	9.5%	14.25%	19%	23.75%	28.5%	33.25%	38%	42.75%	47.5%	52.25%	57%	71.25%
90%		4.5%	9%	13.5%	18%	22.5%	27%	31.5%	36%	40.5%	45%	49.5%	54%	67.5%
85%		4.25%	8.5%	12.75%	17%	21.25%	25.5%	29.75%	34%	38.25%	42.5%	46.75%	51%	63.75%
80%		4%	8%	12%	16%	20%	24%	28%	32%	36%	40%	44%	48%	60%
75%		3.75%	7.5%	11.25%	15%	18.75%	22.5%	26.25%	30%	33.75%	37.5%	41.25%	45%	56.25%
70%		3.5%	7%	10.5%	14%	17.5%	21%	24.5%	28%	31.5%	35%	38.5%	42%	49%
65%		3.25%	6.5%	9.75%	13%	16.25%	19.5%	22.75%	26%	29.25%	32.5%	35.75%	39%	42.25%
60%		3%	6%	9%	12%	15%	18%	21%	24%	27%	30%	33%	36%
55%		2.75%	5.5%	8.25%	11%	13.75%	16.5%	19.25%	22%	24.75%	27.5%	30.25%
50%		2.5%	5%	7.5%	10%	12.5%	15%	17.5%	20%	22.5%	25%
45%		2.25%	4.5%	6.75%	9%	11.25%	13.5%	15.75%	18%	20.25%
40%		2%	4%	6%	8%	10%	12%	14%	16%
35%		1.75%	3.5%	5.25%	7%	8.75%	10.5%	12.25%
30%		1.5%	3%	4.5%	6%	7.5%	9%
25%		1.25%	2.5%	3.75%	5%	6.25%
20%		1%	2%	3%	4%
15%		0.75%	1.5%	2.25%
10%		0.5%	1%
5%		0.25%
5%	0%	0%

Since an attack roll must succeed before any threat roll can be made, if chance to hit < Critical Threat then Critical Threat is restricted to chance to hit. For example, 10% chance to hit (roll 19-20 + Attack ≥ Defense) means that a Lightsaber inflicts no more damage with Master Critical Strike (Critical Threat: 13-20,x2) than a standard Attack (Critical Threat: 19-20,x2) since roll 13-18 + Attack < Defense, resulting in a miss on an attack roll, and failure to convert on a threat roll. Consequently, the chance of any hit becoming a Critical Hit is only 1% (0.1 * 0.1 * 100) in both cases.

Average damage multiplier per attack = Attack success + (Threat success * (Critical Multiplier - 1) * min(Critical Threat, Attack success))

For example, with maximum 95% chance to hit (roll 2 + Attack ≥ Defense) and 100% critical conversion (roll 1 + Attack ≥ Defense):

Average damage multiplier per attack = 0.95 + ((Critical Multiplier - 1) * Critical Threat)

Threat	20	19	18	17	16	15	14	13	12	11	10	9	6
Chance	5%	10%	15%	20%	25%	30%	35%	40%	45%	50%	55%	60%	75%
x2	1	1.05	1.1	1.15	1.2	1.25	1.3	1.35	1.4	1.45	1.5	1.55	1.7
x3	1.05	1.15	1.25	1.35	1.45	1.55		1.75		1.95
x4	1.1	1.25		1.55

A Critical Hit is required to trigger knockdown when using Power Blast or Power Attack, and HK-47's Assassin Protocols.

Massive Criticals

Massive Criticals bonuses are only added to Critical Hits, and not multiplied by them. Some weapons already have a Massive Criticals bonus:

Ranged	Weapon	Bonus
Hold out blasters	Field Survival Pistol	+1-4
	Scout Enforcer	+1-6
	Watchman Blaster	+1-8
	Elite Watchman Blaster	+2-12
Blaster rifles	Combat Enforcer	+1-6
	Mandalorian Heavy Repeater	+1-10
	Droid Assassin's Rifle	+2-20

Melee	Weapon	Bonus
Long swords	Trandoshan Sword	+4-4
Vibro double-blades	Trandoshan Double-Blade	+1-8
	Zhaboka	+2-16

Massive Criticals bonuses are always the same damage type as the weapon itself, and can be added to some weapons with upgrade items:

Ranged	Upgrade item	Bonus
Power packs	Ion Charger Mark II	+2
	Mark III	+4
	Mark IV	+5
	Mark V	+2-16
	Power Pulsator Mark I	+1-4
	Mark II	+1-8
	Mark III	+1-10
	Mark IV	+2-16
	Mark V	+2-20
Firing chambers	Broadening Chamber Mark I	+2
	Mark II	+4
	Mark III	+1-12
	Precision Chamber Mark I	+1
	Mark II	+1-6
	Mark III	+2-12

Melee	Upgrade item	Bonus
Edges	Mild Devaronian Edge	+1-3
	Moderate	+1-8
	Severe	+2-12
	Deadly	+2-20
	Improved Neutronium Edge	+1-4
	Superior	+1-6
Energy cells	Ion Cell	+1
	Mark II	+1-6
	Mark III	+2-12
	Mark IV	+2-16
	Sonic Discharge Cell	+1-8
	Mark II	+2-12
	Mark III	+2-16

If a lightsaber has any Massive Criticals bonus, then 2-12 is added to the sum of any of the following:

Lightsaber	Upgrade item	Bonus
Energy cells	Discharge Energy Cell	+1-3
	Improved	+1-6
	Superior	+1-8
	Ion Energy Cell	+1-4
	Improved	+1-3
	Superior	+1-6
Power crystals	Ultima-pearl	+1-6
	Crystal, Opila	+2-12

Level	Power crystal	Bonus
1	Black Name Crystal	+1-4
12		+1-6
15		+1-8
18		+1-10
21		+1-12
24		+2-16
27		+2-20
30		+3-24
33		+3-30

Any Massive Criticals bonuses are added to bonus damage in the Combat log's Damage Breakdown.

Damage Immunity

Damage Immunity versus a specified damage type is an item bonus that first reduces damage of that type by a percentage, even before Shields. Damage Immunity: 100% is possible in some cases, resulting in no damage whatsoever, although this is hardly ever granted by a single item.

Immunity	Maximum
Bludgeoning	30%
Piercing	30%
Slashing	45%

Immunity	Maximum
Electrical	100%
Energy	90%
Ion	90%

Immunity	Maximum
Cold	60%
Fire	100%
Sonic	100%

Immunity	Maximum
Light Side	50%
Dark Side	70%

Bonuses versus the same damage type all sum as expected, although upgraded item descriptions may only display the highest bonus, or equal bonuses separately.

Source	Description	Bludgeoning	Piercing	Slashing
Hands	Detonator Gloves			10%
	Bothan Precision Gloves			15%
Light armor	Mandalorian Combat Suit	10%	10%	10%
	Mandalorian Heavy Suit
Overlays	Ballistic Shielding	10-20%	10-20%	10-20%
Plating	Droid Diatium Plating	75%	75%	75%

Damage Immunity vs Bludgeoning, Piercing and Slashing can become increasingly useful against unarmed attacks and melee weapons as you level up and enemy damage multipliers increase.

Source	Description	Electrical	Energy	Ion
Implants	Lornan Implant	10%	5%
Head	Shielding Visor	5%	5%	5%
	Enhanced Shielding Visor	15%	15%	15%
	Absorption Visor	15%	15%	75%
Belts	Multishield Generator	50%		15%
	Electrical Capacitance Shield	75%
Robes	Norris Robe		20%
Light armor	Echani Shield Suit	10%	10%
Overlays	Energy Shielding		10-30%
	Ablative Plating		10-30%
	Heavy Bonded Plates Mark III		15%
Underlays	Armorweave Underlays		10-30%
Plating	Droid Quadranium Armor	25%	25%
	Droid Agrinium Armor	50%	50%
	Droid Capacitor Armor	75%	75%	75%

Significant electrical damage can be inflicted by Shock and Stun Droid powers, but Force Resistance or Immunity, or saves and Damage Resistance vs Electrical, can already grant sufficient protection. Overloading computer terminals you're currently using can inflict up to 1000 electrical damage to all in the area of effect, but you can just... not do that.

Damage Immunity vs Energy can become increasingly useful, as energy weapons (most blaster pistols and rifles, and lightsabers) are extremely common and can become much more damaging as you level up and enemy damage multipliers increase. For example, Jedi armor or light, medium or heavy armor upgraded with Energy Shielding Mark IV and an Armorweave Underlay Mark V grants Damage Immunity: 60% vs Energy in total, and this can be increased to maximum 90%, drastically increasing the total damage a Verpine Prototype Shield can effectively absorb:

Immunity vs Energy	Base (0%)	60%	65%	70%	75%	80%	85%	90%
Total points absorbed	170	425	485	566	680	850	1133	1700

Alternatively, Damage Immunity vs Energy can drastically increase the damage an enemy must inflict before the Damage Resistance of Master Energy Resistance cannot resist it entirely:

Immunity vs Energy	Base (0%)	60%	65%	70%	75%	80%	85%	90%
Maximum resisted	20	50	57	66	80	100	133	200

Damage Immunity vs Ion would be more useful for Droids.

Source	Description	Cold	Fire	Sonic
Head	Arkanian Blinders		10%
	Absorption Visor			90%
Hands	Insulated Gloves	30%	20%
	Detonator Gloves		25%
	Bothan Precision Gloves
Belts	Aratech SD Belt			25%
	Multishield Generator		50%
	Thermal Shield Generator		75%
Overlays	Heat Shielding		10-20%
	Sound Dampening Overlays			10-50%
Underlays	Environment Underlays	15-30%	15-30%
Plating	Droid Agrinium Armor		50%
	Droid Quadranium Armor		100%	25%

Saves and Damage Resistance should grant sufficient protection, since sonic, cold and fire damage are normally inflicted in relatively small and set amounts by grenades, mines and droid special weapons.

Source	Description	Light Side	Dark Side
Head	Bindo's Band	10%	10%
	Meditation Band		20%
	Matukai Meditation Band		30%

Source	Description	Light Side	Dark Side
Belts	Qel-Droma Belt	20%	20%
Robes	Baran Do Novice Robe	10%	10%
	Baran Do Sage Robe	20%	20%

Light Side damage is only inflicted by your own light or white Name Crystal, while Dark Side damage is only inflicted by your own dark or black Name Crystal, Freedon Nadd's Blaster and Drain Life or Death Field (against which Force Resistance or Immunity, or saves, should grant sufficient protection).

Shields

A shield can absorb any damage of the specified type(s) remaining after Damage Immunity. Organic characters can equip a shield on each arm, although only one shield can be active at a time: using a shield replaces any already active. Each shield charge has a duration of 200 seconds, or until maximum damage has been taken. Any damage absorbed, and points remaining, are recorded in Feedback, not the Combat log.

Shield	Absorbs
	Points	Energy	Sonic	Cold	Heat	Electrical
Telos Mining Shield	20	No	No	No	Yes	No
Energy Shield	40	Yes	No	No	No	Yes
Echani Shield	100	Yes	No	No	No	Yes
Echani Dueling Shield	130	Yes	No	No	No	Yes
Arkanian Energy Shield	80	Yes	Yes	Yes	Yes	Yes
Verpine Prototype Shield	170	Yes	Yes	Yes	Yes	Yes

Shields effectively add Vitality versus the specified damage type(s). Organic characters can equip a Mandalorian shield to absorb physical damage instead:

Shield	Absorbs
	Points	Energy	Bludgeoning	Piercing	Slashing
Mandalorian Melee Shield	50	No	Yes	Yes	Yes
Mandalorian Power Shield	70	Yes	Yes	Yes	Yes

Droids can also equip a shield. All droid shields absorb energy and ion damage, but some also absorb electric damage while others absorb sonic, cold and heat (fire) damage:

Droid	Droid Upgrade	Absorbs
		Points	Energy	Sonic	Cold	Heat	Electric	Ion
Peragus Droid Shield		20	Yes	No	No	Yes	No	* 2
Deflector Mark I	Class 1	50	Yes	No	No	No	Yes	Yes
Deflector Mark II	Class 2	70	Yes	No	No	No	Yes	Yes
Deflector Mark III	Class 3	100	Yes	No	No	No	Yes	Yes
Defense Barrier	Class 1	60	Yes	Yes	Yes	Yes	No	Yes
Energy Collector	Class 1	80	Yes	Yes	Yes	Yes	No	Yes
Renewable Shield	Class 3	80	Yes	Yes	Yes	Yes	No	Yes
Unity Grid	Class 3	110	Yes	Yes	Yes	Yes	No	Yes

Ion damage is doubled against a Peragus Droid Shield.

Toughness

The Jedi Weapon Master and Sith Marauder are granted feats that reduce any damage remaining after shields by a percentage:

Inner Strength	I	II	III
Damage	-5%	-10%	-15%

Ignore Pain	I	II	III
Damage	-5%	-10%	-15%

Toughness feats can then further reduce any remaining damage:

Toughness	< 20 Damage	> 19 Damage
Improved	-2	-10%

Wookiee	Toughness I	Toughness II	Toughness III
Damage	-2	-5, then -5%	-8, then -10%

Wookiee Toughness reduces damage after Improved Toughness. Toughness can be surprisingly effective since it affects each of the following:

• Sum of weapon damage
• Sum of bonus damage rolls of each type
• Sum of set item bonuses of each type

For example, Improved Toughness would have the following effect:

Source	Damage			Toughness
	Type	Minimum	Maximum	Minimum	Maximum
Lightsaber	Energy	2	20	0	18
Pontite Lens	Energy	2	12	1	18
Crystal, Upari		1	8
Expert Fencing Emitter	Energy	3	3	6	6
Crystal, Qixoni		5	5
Telgorn Jolt Cell Mark III	Electrical	1	8	0	6
Jedi Guardian dark mastery	Slashing	1	8	0	6
Total		15	64	7	54

Damage is affected five times in this case, but the Combat log's Damage Breakdown only lists Toughness once. However, these multiple effects can be detected by comparing listed damage to expected damage: this is clearest with rolls and set bonuses of different types (for example, electrical or slashing not being listed on roll 1-2), but can also be seen when the total is less than the expected minimum.

Damage Resistance

Damage Resistance versus a specified damage type reduces any damage of that type remaining after Toughness, by a set amount. However, bonuses do not sum: only the highest ever has any effect (although upgraded item descriptions may display equal bonuses separately). Any damage resisted is recorded in Feedback, not the Combat log.

Resistance	Source	Maximum
Physical	Master Force Barrier	15/-
Electrical	Mandalorian Battle Armor	25/-
Energy	Master Energy Resistance	20/-
Ion	Droid System Fortification	10/-
Dark Side	Force Shield	5/-

Resistance	Source	Maximum
Cold	Zabrak Field Armor	30/-
Fire	Mandalorian Assault Armor	25/-
	Verpine Zal Alloy Mesh
Sonic	Powered Light Battle Armor	25/-
	Verpine Zal Alloy Mesh

/- simply means that the value is subtracted from that damage type.

Damage Resistance: Resist 20/- vs Electrical, Energy, Cold, Fire and Sonic can be granted by Master Energy Resistance to the entire party from level 17, for 120 seconds (2 minutes): while this isn't the maximum against those damage types, it is normally sufficient protection.

Like Toughness, Damage Resistance affects each of the following separately:

• Sum of weapon damage
• Sum of bonus damage rolls of specified type
• Sum of set item bonuses of specified type

This makes Damage Resistance more effective against advanced weapons with these bonuses.

Source	Description	Physical
Force powers	Force Barrier	4
	Improved Force Barrier	8
	Master Force Barrier	15
Implants	Numbness System	5
Belts	Immunity Belt	5
	Immortality Belt	10

Source	Description	Physical
Body	Mira's Ballistic Mesh Jacket	5
Heavy	M'uhk'gfa	10
Overlays	Bonded Plates Mark IV	5
Plating	Droid Energized Armor Mark II	5
	Droid Energized Armor Mark III	10

Maximum Damage Resistance: Resist 15/- vs Bludgeoning, Piercing, Slashing (physical) can only be granted by Master Force Barrier to the Jedi using it from level 15, for 60 seconds.

Source	Description	Electric	Energy
Force powers	Energy Resistance	6	6
	Improved Energy Resistance	12	12
	Master Energy Resistance	20	20
Implants	Durability Implant	5	5
Hands	Nagai Combat Gloves		5
	Lightning Gloves	10
Belts	Immunity Belt		5
	Immortality Belt		10

Source	Description	Electric	Energy
Light armor	Electromesh Suit		5
	Ubese Environmental Suit	10	10
Medium	Electromesh Armor		10
Heavy	M'uhk'gfa		5
	Matrix Armor		5
	Mandalorian Battle Armor	25
	Mandalore's Armor	25
Overlays	Ablative Plating Mark IV		5

Damage Resistance: Resist 20/- vs Electrical, Energy is granted by Master Energy Resistance to the entire party from level 17, for 120 seconds (2 minutes): this is close to maximum vs Electrical, and the maximum vs Energy.

Source	Description	C	F	S
Force powers	Energy Resistance	6	6	6
	Improved Energy Resistance	12	12	12
	Master Energy Resistance	20	20	20
Head	Survey Gear			5
	Interface Band			5
	Sonic Nullifiers			10
Hands	Bothan Precision Gloves		5
Overlays	Sound Dampening Overlays			0-5
	Heat Shielding		0-10
Underlays	Environment Underlays	5-10	5-10
Edges	Ostrine Edge		5

Source	Description	C	F	S
Light armor	Ubese Environmental Suit	10	10
	Echani Light Armor		15
	Armored Flight Suit	20
	Zabrak Battle Armor	20
	Ulic Qel Droma's Mesh Suit	20	20
	Zabrak Field Armor	30
Medium armor	Cinnagar War Suit			15
	Krath Holy Battle Suit	15	15	15
	Heavy Cinnagar War Suit			20
	Powered Light Battle Armor			25
Heavy armor	Mandalorian Assault Armor	25	25
	Verpine Zal Alloy Mesh	25	25	25

Damage Resistance: Resist 20/- vs Cold, Fire, Sonic is granted by Master Energy Resistance to the entire party from level 17, for 120 seconds (2 minutes): this is normally sufficient protection.

Source	Description	Ion
Sensor	Droid System Fortification	10

Source	Description	Dark Side
Head	Force Shield	5

Combat Difficulty

Adjusting Combat Difficulty in Gameplay Options at any time has the following effect on damage from enemy attacks:

Difficulty	Enemy Damage	Final Damage
		1	2	3	4	5	6	7	8	9	10
Easy	50%	0	1	1	2	2	3	3	4	4	5
Normal	100%	1	2	3	4	5	6	7	8	9	10
Difficult	150%	1	3	4	6	7	9	10	12	13	15

Final enemy damage is reduced by 50% on Easy and increased by 50% on Difficult, rounding down in both cases. This includes 'friendly' fire from grenades, and returned blaster bolts.

Vitality

Your main character and party are granted the following Vitality per class level:

Vitality per class level	6	8	10	12
Classes	Scoundrel Jedi Consular	Scout Jedi Sentinel Expert Droid	Soldier Jedi Guardian Minion	Combat Droid
Prestige classes	Jedi Master Sith Lord	Jedi Watchman Sith Assassin	Jedi Weapon Master Sith Marauder

However, enemies normally have their own base Vitality value, with a multiplier based on your main character level:

Set 1, Set 2 and Set 3	Set 4	Set 5
max(rounddown((main lvl + 1) * 0.65) - 1; 1)	max(round(main level * 0.7) – 1; 1)	max(round(main level * 0.8) – 1; 1)

Constitution modifier is also added to Vitality per level for all characters, retroactive for levels previously gained, as are the following:

Feat or Force power	Base	Improved	Master
Toughness	+1		+2
Fury	+1	+2	+3

Feats	I	II	III
Wookiee Toughness	+2	+3	+4
Wookiee Rage	Rage +1	Fury +2	Frenzy +3

Vitality bonuses are also granted by the following:

Feat		Stimulants
War Veteran	+25	Battle	+8	Hyper-battle	+16	Echani Battle	+25

Regeneration

Your main character and party can regenerate lost Vitality once every 6 seconds, depending on Constitution modifier (CON): 0.3 * CON is regenerated in combat, +1 out of combat. For example:

Constitution	8	10	12	14	16	18	20
Modifier	-1	0	1	2	3	4	5
Combat	-0.3	0	0.3	0.6	0.9	1.2	1.5
No Combat	0.7	1	1.3	1.6	1.9	2.2	2.5

The Regenerate Vitality Points feat adds 0.5 to these values, which Battle Meditation then doubles while active: for example, a character with 20 Constitution (CON +5), Regenerate Vitality Points and Battle Meditation active regenerates ((0.3 * 5) + 0.5) * 2 = 4 Vitality once every 6 seconds in combat, and ((0.3 * 5) + 1 + 0.5) * 2 = 6 out of combat.

Any Regeneration item bonuses are then simply added to these values:

Source		Bonus
Implants	Health Package	1
	Biotech Implant
Head	Rebreather Mask	1
Hands	Zeison Sha Gloves	1
Jedi armor	Darth Malak's Armor	2
T3-M4	Droid Self-Sustaining Unit	3
Mandalore	Implant Switching	4

Upgrade items		Bonus
Armor	Biorestorative Underlay Mark I-II	1-2
	Biorestorative Underlay Mark III-V	3
Lightsaber	Ankarres Sapphire	2
	Crystal, Kaiburr	3

Maximum Regeneration: 18 for a dark Jedi with at least 12 Constitution, Armor Proficiency: Medium and two (Short) Lightsabers (upgraded item descriptions may only display the highest bonus, but all are summed).

Cleave

When any character kills with a ranged or melee attack (or a droid special weapon), then that character can perform an extra action in that combat round: if the action queue is empty or cleared then this is an automatic Attack if a target is in range (which may include taking a step or two in melee range), otherwise it's the next action queued against another target in range, whether that's a combat feat, Force power (including buffs targeting you or your party), grenade or item use. If no action is queued against a target in range, and no target is in range, then there's no extra action.

If you attack and kill from Stealth then the extra action doesn't count as a Sneak Attack. If the extra action kills the next target as well then this doesn't trigger another extra action, so two is the maximum that can be killed by a character's attacks (or a droid special weapon) in a single combat round. Thus inflicting enough damage to kill targets in a single round can significantly increase kill speed:

Rounds to kill	Cumulative maximum kills
	Round 1	Round 2	Round 3	Round 4	Round 5
1	2	4	6	8	10
2		1	2	3	4
3			1	1	2