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 75% discount on MP7M/MP5M
	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 MP7M/MP5M have 77% 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 MP7M/MP5M have 79% 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 MP7M/MP5M have 81% 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 MP7M/MP5M have 83% 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 MP7M/MP5M have 85% 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 MP7M MP7M/MP5M have 87% discount and double clip size
Support Specialist	0	N/A	+10% shotguns damage +10% shotguns penetration +10% weld/unweld speed 10% shotguns discount
	1	Weld 2000 door HP Inflict 25,000 HP shotgun damage	+10% shotguns damage +18% shotguns penetration +10% shotguns ammo +5% grenade damage +20% grenade capacity (6) +15% carry weight +25% weld/unweld speed 20% shotguns discount
	2	Weld 7K door HP Inflict 100K HP shotgun damage	+20% shotguns damage +36% shotguns penetration +20% shotguns ammo +10% grenade damage +40% grenade capacity (7) +20% carry weight +50% weld/unweld speed 30% shotguns discount
	3	Weld 35K door HP Inflict 500K HP shotgun damage	+30% shotguns damage +54% shotguns penetration +25% shotguns ammo +20% grenade damage +60% grenade capacity (8) +25% carry weight +75% weld/unweld speed 40% shotguns discount
	4	Weld 120K door HP Inflict 1.5M HP shotgun damage	+40% shotguns damage +72% shotguns penetration +25% shotguns ammo +30% grenade damage +80% grenade capacity (9) +30% carry weight +100% weld/unweld speed 50% shotguns discount
	5	Weld 250K door HP Inflict 3.5M HP shotgun damage	+50% shotguns damage +90% shotguns penetration +25% shotguns ammo +40% grenade damage +100% grenade capacity (10) +50% carry weight +150% weld/unweld speed 60% shotguns discount Starts with shotgun
	6	Weld 370K door HP Inflict 5.5M HP shotgun damage	+60% shotguns damage +90% shotguns penetration +30% shotguns ammo +50% grenade damage +120% grenade capacity (11) +60% carry weight +150% weld/unweld speed 70% shotguns discount Starts with hunting shotgun
Sharpshooter	0	N/A	+10% headshot damage with precision weapons +5% headshot damage with other weapons 10% discount on Handcannons, 44.Magnum and M14
	1	30 headshots with precision weapons: 9mm Pistol Handcannon 44.Magnum Lever Action Rifle Crossbow M14	+21% headshot damage with precision weapons +10% headshot damage with other weapons -25% recoil with precision weapons 10% faster reload with precision weapons 10% faster rate of fire with Lever Action Rifle 20% discount on Handcannons, 44.Magnum and M14
	2	100 headshots with precision weapons: 9mm Pistol Handcannon 44.Magnum Lever Action Rifle Crossbow M14	+38% headshot damage with precision weapons +20% headshot damage with other weapons -50% recoil with precision weapons 20% faster reload with precision weapons 20% faster rate of fire with Lever Action Rifle 30% discount on Handcannons, 44.Magnum and M14
	3	700 headshots with precision weapons: 9mm Pistol Handcannon 44.Magnum Lever Action Rifle Crossbow M14	+56% headshot damage with precision weapons +30% headshot damage with other weapons -75% recoil with precision weapons 30% faster reload with precision weapons 30% faster rate of fire with Lever Action Rifle 40% discount on Handcannons, 44.Magnum and M14
	4	2500 headshots with precision weapons: 9mm Pistol Handcannon 44.Magnum Lever Action Rifle Crossbow M14	+82% headshot damage with precision weapons +40% headshot damage with other weapons -75% recoil with precision weapons 40% faster reload with precision weapons 40% faster rate of fire with Lever Action Rifle 50% discount on Handcannons, 44.Magnum and M14
	5	5500 headshots with precision weapons: 9mm Pistol Handcannon 44.Magnum Lever Action Rifle Crossbow M14	+125% headshot damage with precision weapons +50% headshot damage with other weapons -75% recoil with precision weapons 50% faster reload with precision weapons 50% faster rate of fire with Lever Action Rifle 60% discount on Handcannons, 44.Magnum and M14 Spawns with Lever Action Rifle
	6	8500 headshots with precision weapons: 9mm Pistol Handcannon 44.Magnum Lever Action Rifle Crossbow M14	+140% headshot damage with precision weapons +50% headshot damage with other weapons -75% recoil with precision weapons 60% faster reload with precision weapons 60% faster rate of fire with Lever Action Rifle 70% discount on Handcannons, 44.Magnum and M14 Spawns with Crossbow
Commando	0	N/A	5% more damage with Bullpup/M4/AK47/SCAR 5% less recoil with Bullpup/M4/AK47/SCAR 5% faster reload with all weapons 10% discount on Bullpup/M4/AK47/SCAR Can see cloaked Stalkers from 4 meters
	1	Kill 30 stalkers and deal 25K damage with: Bullpup M4 AK47 SCAR	10% more damage with Bullpup/M4/AK47/SCAR 10% less recoil with Bullpup/M4/AK47/SCAR 10% larger Bullpup/M4/AK47/SCAR clip 10% faster reload with all weapons 20% discount on Bullpup/M4/AK47/SCAR Can see cloaked Stalkers from 8m Can see enemy health from 4m
	2	Kill 100 stalkers and deal 100K damage with: Bullpup M4 AK47 SCAR	20% more damage with Bullpup/M4/AK47/SCAR 15% less recoil with Bullpup/M4/AK47/SCAR 20% larger Bullpup/M4/AK47/SCAR clip 15% faster reload with all weapons 30% discount on Bullpup/M4/AK47/SCAR Can see cloaked Stalkers from 10m Can see enemy health from 7m
	3	Kill 350 stalkers and deal 500K damage with: Bullpup M4 AK47 SCAR	30% more damage with Bullpup/M4/AK47/SCAR 20% less recoil with Bullpup/M4/AK47/SCAR 25% larger Bullpup/M4/AK47/SCAR clip 20% faster reload with all weapons 40% discount on Bullpup/M4/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: Bullpup M4 AK47 SCAR	40% more damage with Bullpup/M4/AK47/SCAR 30% less recoil with Bullpup/M4/AK47/SCAR 25% larger Bullpup/M4/AK47/SCAR clip 25% faster reload with all weapons 50% discount on Bullpup/M4/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: Bullpup M4 AK47 SCAR	50% more damage with Bullpup/M4/AK47/SCAR 30% less recoil with Bullpup/M4/AK47/SCAR 25% larger Bullpup/M4/AK47/SCAR clip 30% faster reload with all weapons 60% discount on Bullpup/M4/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: Bullpup M4 AK47 SCAR	50% more damage with Bullpup/M4/AK47/SCAR 40% less recoil with Bullpup/M4/AK47/SCAR 25% larger Bullpup/M4/AK47/SCAR clip 35% faster reload with all weapons 70% discount on Bullpup/M4/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/Katana/Claymore 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% discount on Chainsaw/Katana/Claymore 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% discount on Chainsaw/Katana/Claymore 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% discount on Chainsaw/Katana/Claymore 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 20% damage resistance 50% discount on Chainsaw/Katana/Claymore Can't be grabbed by clots 3 Zed-Time extensions
	5	3.5M melee weapon damage	+100% melee damage 20% faster melee attacks +20% melee movement -75% bloat bile damage 30% damage resistance 60% discount on Chainsaw/Katana/Claymore 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 +25% melee movement -80% bloat bile damage 40% damage resistance 70% discount on Chainsaw/Katana/Claymore Can't be grabbed by clots 4 Zed-Time extensions Starts with Axe and armor
Firebug	0	N/A	+5% incendiary weapons damage 50% fire resistance 10% incendiary weapons discount
	1	25K fire damage	+10% incendiary weapons damage +10% flamethrower/Husk Gun fuel canister size +12% Mac10 clip size +10% faster flamethrower reload +5% faster Mac10 reload 60% fire resistance 20% incendiary weapons discount
	2	100K fire damage	+20% incendiary weapons damage +20% flamethrower/Husk Gun fuel canister size +24% Mac10 clip size +20% faster flamethrower reload +10% faster Mac10 reload 70% fire resistance 30% incendiary weapons discount
	3	500K fire damage	+30% incendiary weapons damage +30% flamethrower/Husk Gun fuel canister size +36% Mac10 clip size +30% faster flamethrower reload +15% faster Mac10 reload +50% flamethrower range 80% fire resistance 40% incendiary weapons discount Incendiary grenades
	4	1.5M fire damage	+40% incendiary weapons damage +40% flamethrower/Husk Gun fuel canister size +48% Mac10 clip size +40% faster flamethrower reload +20% faster Mac10 reload +50% flamethrower range 90% fire resistance 50% incendiary weapons discount Incendiary grenades
	5	3.5M fire damage	+50% incendiary weapons damage +50% flamethrower/Husk Gun fuel canister size +60% Mac10 clip size +50% faster flamethrower reload +25% faster Mac10 reload +100% flamethrower range immune to fire 60% incendiary weapons discount Incendiary grenades Starts with flamethrower
	6	5.5M fire damage	+60% incendiary weapons damage +60% incendiary weapons clip size +60% faster flamethrower reload +30% faster Mac10 reload +100% flamethrower range immune to fire 70% incendiary weapons discount Incendiary grenades Starts with flamethrower and body armor
Demolitions	0	N/A	+5% explosive damage 25% explosive resistance 10% discount on explosives 50% discount on remote explosives
	1	25K explosive damage	+10% explosive damage 30% explosive resistance 20% discount on explosives 54% 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 58% 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 62% 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 66% 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 70% 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 74% discount on remote explosives Can carry 11 grenades and 8 remote explosives Starts with an M79 and a pipe bomb