Just did it after 10 and half hours, 2k gold repairs, farmed for 10 purification potions, used 8. Was messing up constantly and only got passed the 2nd fellhound phase 3 times. They were my biggest problem. Then it was my crappy dps and too many imps.
Gear ilvl479 equiped with a green trinket from klaxxi and a blue int/mana trinket because my drop luck sucks.
My fight ended after the 5th wave of fel imps. Was using them to Shadowburn execute him down.
Misstress Talnivarr eu
here's my killed it screen
Thanks to everyone in the thread posting tips, and especially LockPowerGaming's vid, every attempt I reset the video to have the celldweller music pump me up!
Best of luck Warlocks.