7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
1-2 Extra Chained Energised Hits and 2.5-10% Impact on Energised Hits.
5-6.5% Strength for 3.5s on Close Range Kill.
Gain 7-10% Close Damage for 3.5 seconds after killing an enemy at close range, stacking 5 times.
TLDR: Close range playstyle, swap weapons often and Decimate hordes. Shout as needed.