Durn The Hungerer went fucking down. I put a few dots on him, but pretty much all of the damage came from my minion, infernal, and imps I got through bane of doom. I just kept spamming health funnel, used health stones, potions, life blood, a healing trinket, and the heal bonus from dreaming glory to keep my health up, and when I aggro'd him I had a trinket to drop my aggro.
Granted I'm a lvl 70 lock, but fuck it felt good.
I'd love to take down the fel reaver, but that's not gonna happen.