7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
3.5-5% Strength for 3.5s on Hit. Stacks 5 times.
Gain 7-10% Close Damage for 3.5 seconds after killing an enemy at close range, stacking 5 times.
4.5-6% Close Range damage on Repeated Hit. Stacks 5 times.
Steam; https://steamcommunity.com/id/Vel-San/