12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
Continuously chaining more than 2 attacks gives 2-5% Power. Stacks 10 times.
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.
Shredder nades for hordes and bosses
Brauto damn near everything else. Tag everything you can. I have it mapped it to my left wheel button on a Logitech G502.
Shovel for single big targets / horde control (H1 -> L1)
Options are there to play around with. Bring it Down, Target Down, and Volley Adept can easily be swapped based on preference.