Zealot
1-4% to Instakill human-sized enemies on Chained Heavy Hit. Stacks 5 times. Note that other potential triggers will not be activated on Instakill.
52.5-60% Weak Spot Damage (Enemies with Bleed Stacks).
5-8% Strength for every 10% of magazine spent during continuous fire. Stacks 5 times.
Critical Hits spend Ammo from your Reserve instead of you current fuel tank.