Killing Floor/Perks

Perks determine the set of bonuses available for you. To advance the perk, you need to perform a specified task (and have an active internet connection) under any class. As you do, the bonuses from a given perk will increase.

Perk		Requires	Effects
Field Medic	0	N/A	10% faster syringe charge 10% more potent medical injections 10% less damage from bloat bile 85% discount on medic gun
	1	Heal 250 HP on teammates	25% faster syringe charges 25% more potent medical injections 25% less damage from Bloat Bile 10% better Body Armour 20% discount on body armor Medic gun has 87% discount and 20% larger clip
	2	Heal 750 HP on teammates	50% faster syringe charges 25% more potent medical injections 50% less damage from Bloat Bile +5% movement speed 20% better Body Armour 30% discount on body armor Medic Gun has 89% discount and 40% larger clip.
	3	Heal 4000 HP on teammates	75% faster syringe charges 50% more potent medical injections 50% less damage from Bloat Bile +10% movement speed 30% better Body Armour 40% discount on body armor Medic Gun has 91% discount and 60% larger clip
	4	Heal 12K HP on teammates	100% faster syringe charges 50% more potent medical injections 50% less damage from Bloat Bile +15% movement speed 40% better Body Armour 50% discount on body armor Medic Gun has 93% discount and 80% larger clip
	5	Heal 25K HP on teammates	150% faster syringe charges 50% more potent medical injections 75% less damage from Bloat Bile +20% movement speed 50% better Body Armour 60% discount on body armor Starts with body armor Medic gun has 95% discount and double clip size
	6	Heal 100K HP on teammates	200% faster syringe charges 75% more potent medical injections 75% less damage from Bloat Bile +25% movement speed 75% better Body Armour 60% discount on body armor Starts with body armor and medic gun Medic gun has 97% discount and double clip size
Support Specialist	0	N/A	+10% shotgun damage +10% shotgun penetration +10% weld/unweld speed 10% shotgun discount
	1	Weld 2000 door HP Inflict 25,000 HP shotgun damage	+10% shotgun damage +18% shotgun penetration +10% shotgun ammo +5% grenade damage +20% grenade capacity (6) +15% carry weight +25% weld/unweld speed 20% shotgun discount
	2	Weld 7K door HP Inflict 100K HP shotgun damage	+20% shotgun damage +36% shotgun penetration +20% shotgun ammo +10% grenade damage +40% grenade capacity (7) +20% carry weight +50% weld/unweld speed 30% shotgun discount
	3	Weld 35K door HP Inflict 500K HP shotgun damage	+30% shotgun damage +54% shotgun penetration +25% shotgun ammo +20% grenade damage +60% grenade capacity (8) +25% carry weight +75% weld/unweld speed 40% shotgun discount
	4	Weld 120K door HP Inflict 1.5M HP shotgun damage	+40% shotgun damage +72% shotgun penetration +25% shotgun ammo +30% grenade damage +80% grenade capacity (9) +30% carry weight +100% weld/unweld speed 50% shotgun discount
	5	Weld 250K door HP Inflict 3.5M HP shotgun damage	+50% shotgun damage +90% shotgun penetration +25% shotgun ammo +40% grenade damage +100% grenade capacity (10) +50% carry weight +150% weld/unweld speed 60% shotgun discount Starts with shotgun
	6	Weld 370K door HP Inflict 5.5M HP shotgun damage	+60% shotgun damage +90% shotgun penetration +30% shotgun ammo +50% grenade damage +120% grenade capacity (11) +60% carry weight +150% weld/unweld speed 70% shotgun discount Starts with hunting shotgun
Sharpshooter	0	N/A	+5% damage with precision weapons +5% headshot damage 10% discount on Handcannons and M14
	1	30 headshots with precision weapons: 9mm Handcannon RifleCrossbow M14	+10% damage, -25% recoil 10% faster reload with precision weapons +10% headshot damage 20% discount on Handcannons and M14
	2	100 headshots with precision weapons: 9mm Handcannon RifleCrossbow M14	+15% damage, -50% recoil 20% faster reload with precision weapons +20% headshot damage 30% discount on Handcannons and M14
	3	700 headshots with precision weapons: 9mm Handcannon RifleCrossbow M14	+20% damage -75% recoil 30% faster reload with precision weapons +30% headshot damage 40% discount on Handcannons and M14
	4	2500 headshots with precision weapons: 9mm Handcannon RifleCrossbow M14	+30% damage, -75% recoil 40% faster reload with precision weapons +40% headshot damage 50% discount on Handcannons and M14
	5	5500 headshots with precision weapons: 9mm Handcannon RifleCrossbow M14	+50% damage -75% recoil 50% faster reload with precision weapons +50% headshot damage 60% discount on Handcannons and M14 Spawns with Lever Action Rifle
	6	8500 headshots with precision weapons: 9mm Handcannon RifleCrossbow M14	+60% damage, -75% recoil 60% faster reload with precision weapons +50% headshot damage 70% discount on Handcannons and M14 Spawns with Crossbow
Commando	0	N/A	5% more damage with Bullpup/AK47/SCAR 5% less recoil with Bullpup/AK47/SCAR 5% faster reload with all weapons 10% discount on Bullpup/AK47/SCAR Can see cloaked Stalkers from 4 meters
	1	Kill 30 stalkers and deal 25K damage with: AK47 Bullpup SCAR	10% more damage with Bullpup/AK47/SCAR 10% less recoil with Bullpup/AK47/SCAR 10% larger Bullpup/AK47/SCAR clip 10% faster reload with all weapons 20% discount on Bullpup/AK47/SCAR Can see cloaked Stalkers from 8m Can see enemy health from 4m
	2	Kill 100 stalkers and deal 100K damage with: AK47 Bullpup SCAR	20% more damage with Bullpup/AK47/SCAR 15% less recoil with Bullpup/AK47/SCAR 20% larger Bullpup/AK47/SCAR clip 15% faster reload with all weapons 30% discount on Bullpup/AK47/SCAR Can see cloaked Stalkers from 10m Can see enemy health from 7m
	3	Kill 350 stalkers and deal 500K damage with: AK47 Bullpup SCAR	30% more damage with Bullpup/AK47/SCAR 20% less recoil with Bullpup/AK47/SCAR 25% larger Bullpup/AK47/SCAR clip 20% faster reload with all weapons 40% discount on Bullpup/AK47/SCAR Can see cloaked Stalkers from 12m Can see enemy health from 10m Zed-Time can be extended by killing an enemy while in slow motion
	4	Kill 1200 stalkers and deal 1.5M damage with: AK47 Bullpup SCAR	40% more damage with Bullpup/AK47/SCAR 30% less recoil with Bullpup/AK47/SCAR 25% larger Bullpup/AK47/SCAR clip 25% faster reload with all weapons 50% discount on Bullpup/AK47/SCAR Can see cloaked Stalkers from 14m Can see enemy health from 13m Up to 2 Zed-Time Extensions
	5	Kill 2400 stalkers and deal 3.5M damage with: AK47 Bullpup SCAR	50% more damage with Bullpup/AK47/SCAR 30% less recoil with Bullpup/AK47/SCAR 25% larger Bullpup/AK47/SCAR clip 30% faster reload with all weapons 60% discount on Bullpup/AK47/SCAR Spawn with a Bullpup Can see cloaked Stalkers from 16m Can see enemy health from 16m Up to 3 Zed-Time Extensions
	6	Kill 3600 stalkers and deal 5.5M damage with: AK47 Bullpup SCAR	50% more damage with Bullpup/AK47/SCAR 40% less recoil with Bullpup/AK47/SCAR 25% larger Bullpup/AK47/SCAR clip 35% faster reload with all weapons 70% discount on Bullpup/AK47/SCAR Spawn with an AK47 Can see cloaked Stalkers from 16m Can see enemy health from 16m Up to 4 Zed-Time Extensions
Berserker	0	N/A	+10% melee damage 10% less damage from bloat bile 10% discount on Chainsaw and Katana Can't be grabbed by Clots
	1	25K melee weapon damage	+20% melee damage 5% faster melee attacks +15% melee movement -25% bloat bile damage 5% damage resistance 20% Chainsaw and Katana discount Can't be grabbed by clots
	2	100K melee weapon damage	+40% melee damage 10% faster melee attacks +15% melee movement -35% bloat bile damage 10% damage resistance 30% Chainsaw and Katana discount Can't be grabbed by clots 1 Zed-Time extensions
	3	500K melee weapon damage	+60% melee damage 10% faster melee attacks +15% melee movement -50% bloat bile damage 15% damage resistance 40% Chainsaw and Katana discount Can't be grabbed by clots 2 Zed-Time extensions
	4	1.5M melee weapon damage	+80% melee damage 15% faster melee attacks +15% melee movement -65% bloat bile damage 15% damage resistance 50% Chainsaw and Katana discount Can't be grabbed by clots 3 Zed-Time extensions
	5	3.5M melee weapon damage	+100% melee damage 20% faster melee attacks +15% melee movement -70% bloat bile damage 20% damage resistance 60% Chainsaw and Katana discount Can't be grabbed by clots 4 Zed-Time extensions Starts with chainsaw
	6	5.5M melee weapon damage	+100% melee damage 25% faster melee attacks +20% melee movement -80% bloat bile damage 25% damage resistance 70% Katana/Chainsaw discount Can't be grabbed by clots 4 Zed-Time extensions Starts with chainsaw and armor
Firebug	0	N/A	+5% flamethrower damage 50% fire resistance 10% flamethrower discount
	1	25K flamethrower damage	+10% flamethrower damage +10% fuel canister size +10% faster flamethrower reload 60% fire resistance 20% flamethrower discount
	2	100K flamethrower damage	+20% flamethrower damage +20% fuel canister size +20% faster flamethrower reload 70% fire resistance 30% flamethrower discount
	3	500K flamethrower damage	+30% flamethrower damage +30% fuel canister size +30% faster flamethrower reload +50% flamethrower range 80% fire resistance 40% flamethrower discount Incendiary grenades
	4	1.5M flamethrower damage	+40% flamethrower damage +40% fuel canister size +40% faster flamethrower reload +50% flamethrower range 90% fire resistance 50% flamethrower discount Incendiary grenades
	5	3.5M flamethrower damage	+50% flamethrower damage +50% fuel canister size +50% faster flamethrower reload +100% flamethrower range immune to fire 60% flamethrower discount Incendiary grenades Starts with flamethrower
	6	5.5M flamethrower damage	+60% flamethrower damage +60% fuel canister size +60% faster flamethrower reload +100% flamethrower range immune to fire 60% flamethrower discount Incendiary grenades Starts with flamethrower
Demolitions	0	N/A	+5% explosive damage 25% explosive resistance 10% discount on explosives 75% discount on remote explosives
	1	25K explosive damage	+10% explosive damage 30% explosive resistance 20% discount on explosives 78% discount on remote explosives Can carry 6 grenades and 3 remote explosives
	2	100K explosive damage	+20% explosive damage 35% explosive resistance 30% discount on explosives 81% discount on remote explosives Can carry 7 grenades and 4 remote explosives
	3	500K explosive damage	+30% explosive damage 40% explosive resistance 40% discount on explosives 84% discount on remote explosives Can carry 8 grenades and 5 remote explosives
	4	1.5M explosive damage	+40% explosive damage 45% explosive resistance 50% discount on explosives 87% discount on remote explosives Can carry 9 grenades and 6 remote explosives
	5	3.5M explosive damage	+50% explosive damage 50% explosive resistance 60% discount on explosives 90% discount on remote explosives Can carry 10 grenades and 7 remote explosives Starts with a pipe bomb
	6	5.5M explosive damage	+60% explosive damage 55% explosive resistance 70% discount on explosives 93% discount on remote explosives Can carry 11 grenades and 8 remote explosives Starts with an M79 and a pipe bomb