When you kill an enemy, gain 5 Stamina instantly and an additional 7 Stamina over 7 seconds, stacking up to 5 times.

Each Melee kill grants 5% Melee Damage, 5% Melee Speed and 5% Move Speed for 3 seconds.

When you take a hit for 15 or more damage, gain 25% Damage Resistance for 3 seconds.

Melee kills heal 1 Health and 0.1 Trauma.

When you or your team kills a Mutation gain 1% damage (up to 15%) until the end of the level.

+ 20% Stamina + 20% Sprint Efficiency + 5 Health

+ 20% Stamina + 20% Stamina Regen + 3% Move Speed + 5 Health

+ 1 Extra Life + 15 Health + 25% Bleed out Resistance

+ 20% Weakspot Damage

+ 25% Healing Efficiency When you use a Medical Accessory, the target gains 20 Temporary Health.

+ 1 Offensive Inventory + 25% Swap Speed - 5% Offensive Accessory Cost

+ 25 Health

Press [M2] with Melee weapons to perform a Heavy Attack.

Heavy Attacks deal 100% increased damage and expend 50% more Stamina.

Kills while at Critical Health recover 1 Health.

+ 25% Weapon Swap Speed + 15% Recoil Control + 15% Accuracy