Originally Posted by
FeliAiko
Combine Vengeance with Berserk and Bloodbath, then just OP spam (after swapping to Deliverance). When Zerk is about to end, use Decimate then either swap to Defiance during Pacification window or just continue with Deliverance. Also make sure to have Internal Release and Maim up too. Also if you have it slotted, Second Wind when used under Zerk can give you a big self heal to offset the incoming damage.
Once you've gone through the Veng/Zerk/BB phase you should have: a) Raw Int. + Awareness (+Foresight), and b) Thrill of Battle (+Convalescence). If you've switched back to Defiance then you also have Inner Beast and Equilibrium. Depending on the amount of enemies left and their remaining HP, you might prefer to save the first two options for the next big pull (if there is one before the boss) and just decide to use Foresight only, or Foresight + Convalescence, or just switch to Defiance for Inner Beast and/or Equilibrium.