Before fight buff up with Molten Armaments. From crouch open with heavy bow attack, poison injection, caltrops, med attack, endless hail than head into melee range to drop Rearming Trap.

Bar Swap

Open with Venomous Claw, Noxious Breath, Blood Craze, Medium Attack Weave, Bloodthirst, Medium Attack Weave, Bloodthirst, Heavy Attack

Bar Swap

Reapply Poison Injection, Rearming Trap, Endless Hail, Heavy Attack

Bar Swap to Melee, Rinse and repeat

Use Flawless Dawn Breaker if stamina becomes a problem otherwise continue to build ultimate for Standard of Might.

Caltrops is only cast in the beginning of the fight. Requires too much stamina to recast and isn't worth the resources.