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

Melee kills heal 1 Health to yourself, and teammates within 10 meters.

Melee hits cause the target to deal 3% reduced damage, to a maximum of 15% reduced damage.

When you use a Medical Accessory, the target heals for an additional 20 Health over 30 seconds.

Heal 1 Temporary Health whenever you kill a Ridden within 2.5 meters.

+ 40% Stamina

+ 15% Stamina + 25% Weapon Swap Speed + 15% Move Speed while firing + 10% Slow Resistance

Each Melee swing grants 5% Melee Speed and 5% Melee Stamina Efficiency for 6 seconds, stacking up to 10 times. Your Melee Attacks no longer stick in tough enemies. DISABLES: Aim Down Sights

Melee kills heal 1 Health and 0.1 Trauma.

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

While crouching you neither take nor deal Friendly Fire damage. + 10 Health

+ 50% Accuracy DISABLES: Aim Down Sights

+ 20% Melee Damage against Mutations When you deal Melee damage to a Mutation heal 2 Health and recover 3 Stamina.