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 potenti medical injections, 10% less damage from bloat bile
	1	Heal 250 HP on teammates	25% faster syringe charges, 25% more potent medical injections, 25% less damage from Bloat File, 10% better Body Armour, 20% discount on body armour.
	2	Heal 750 HP on teammates	50% faster syringe charges, 25% more potent medical injections, 50% less damage from Bloat File, +5% movement speed, 20% better Body Armour, 30% discount on body armour.
	3		75% faster syringe charges, 50% more potent medical injections, 50% less damage from Bloat File, +10% movement speed, 30% better Body Armour, 40% discount on body armour.
	4		100% faster syringe charges, 50% more potent medical injections, 50% less damage from Bloat File, +20% movement speed, 40% better Body Armour, 50% discount on body armour.
	5		150% faster syringe charges, 50% more potent medical injections, 75% less damage from Bloat File, +30% movement speed, 50% better Body Armour, 60% discount on body armour, starts with body armour.
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, +20% shotgun penetration, +10% shotgun ammo, +5% grenade damage, +20% grenade capacity, +15% carry weight, +25% weapon switch speed, 20% shotgun discount
	2	Weld 7000 door HP, Inflict 100,000 HP shotgun damage	+20% shotgun damage, +40% shotgun penetration, +20% shotgun ammo, +10% grenade damage, +40% grenade capacity, +20% carry weight, +50% weapon switch speed, 30% shotgun discount
	3		+30% shotgun damage, +60% shotgun penetration, +25% shotgun ammo, +20% grenade damage, +60% grenade capacity, +25% carry weight, +75% weapon switch speed, 40% shotgun discount
	4		+40% shotgun damage, +80% shotgun penetration, +25% shotgun ammo, +30% grenade damage, +80% grenade capacity, +30% carry weight, +100% weapon switch speed, 50% shotgun discount
	5		+50% shotgun damage, +100% shotgun penetration, +25% shotgun ammo, +40% grenade damage, +100% grenade capacity, +50% carry weight, +150% weapon switch speed, 60% shotgun discount, starts with shotgun
Sharpshooter	0	N/A	+5% damage with Handcannon, Rifle and crossbot. +5% headshot damage. 10% discount on Handcannons.
	1	30 headshots with Handcannon, Rifle or crossbow.	+10% damage, -25% recoil and 10% faster reload with Handcannon, Rifle and Crossbow. +10% headshot damage. 20% discount on handcannon.
	2	100 headshots with same weapons	+15% damage, -50% recoil and 20% faster reload with Handcannon, Rifle and Crossbow. +20% headshot damage. 30% discount on handcannon.
	3		+20% damage, -75% recoil and 30% faster reload with Handcannon, Rifle and Crossbow. +30% headshot damage. 40% discount on handcannon.
	4		+30% damage, -75% recoil and 40% faster reload with Handcannon, Rifle and Crossbow. +50% headshot damage. 50% discount on handcannon.
	5		+50% damage, -75% recoil and 50% faster reload with Handcannon, Rifle and Crossbow. +60% headshot damage. 60% discount on handcannon. Spawns with Dual Handcannons.
Commando	0	N/A	+5% damage with Bullpup, -5% recoil with bullpup, 10% discount on Bullpup, detects Stalkers from 4 meters.
	1	Kill 30 stalkers with bullpup, and 25,000 bullpup damage.	+10% damage with Bullpup, -10% recoil with Bullpup, -5% reload time, 20% discount on Bullpup, can see cloaked Stalkers from 8m, and enemy health at 4m
	2	Kill 100 stalkers with bullpup and deal 100,000 bullpup damage	+20% damage with Bullpup, -15% recoil with Bullpup, -5% reload time, 30% discount on Bullpup, can see cloaked Stalkers from 10m, and enemy health at 7m
	3		+30% damage, -20% recoil and 40% discount with Bullpup, -10% reload time, can see cloaked Stalkers from 12m, and enemy health at 10m, 1 Zed-Time extension by killing during Zed-Time.
	4		+40% damage, -30% recoil and 50% discount with Bullpup, -15% reload time, can see cloaked Stalkers from 14m, and enemy health at 13m, 2 Zed-Time extensions
	5		+50% damage, -30% recoil and 60% discount with Bullpup, -20% reload time, can see cloaked Stalkers from 16m, and enemy health at 16m, 3 Zed-Time extensions
Berserker	0	N/A	+10% melee damage. 10% less damage from bloat bile. 10% discount on Chainsaw, can't be grabbed by Clots.
	1	25,000 melee weapon damage.	+20% melee damage, 5% faster melee attacks, +15% melee movement, -25% bloat bile damage, 5% damage resistance, 20% Chainsaw discount , can't be grabbed by clots.
	2	100,000 melee weapon damage.	+40% melee damage, 10% faster melee attacks, +15% melee movement, -35% bloat bile damage, 10% damage resistance, 30% Chainsaw discount, can't be grabbed by clots, 1 Zed-Time extension
	3		+60% melee damage, 10% faster melee attacks, +15% melee movement, -50% bloat bile damage, 15% damage resistance, 40% Chainsaw discount, can't be grabbed by clots, 2 Zed-Time extension
	4		+80% melee damage, 15% faster melee attacks, +15% melee movement, -65% bloat bile damage, 15% damage resistance, 50% Chainsaw discount, can't be grabbed by clots, 3 Zed-Time extension
	5		+100% melee damage, 20% faster melee attacks, +15% melee movement, -70% bloat bile damage, 20% damage resistance, 60% Chainsaw discount, can't be grabbed by clots, 4 Zed-Time extension. Starts with chainsaw.
Firebug	0	N/A	+5% flamethrower damage, 50% fire resistance, 10% flamethrower discount
	1	25,000 flamethrower damage	+10% flamethrower damage, 60% fire resistance, 20% flamethrower discount
	2	100,000 flamethrower damage	+20% flamethrower damage, 70% fire resistance, 30% flamethrower discount
	3		+30% flamethrower damage, 80% fire resistance, 40% flamethrower discount. Incendiary grenades.
	4		+40% flamethrower damage, 90% fire resistance, 50% flamethrower discount. Incendiary grenades.
	5		+50% flamethrower damage, immune to fire, 60% flamethrower discount. Incendiary grenades. Starts with flamethrower.