this encounter is (even if he was nerfed) one of the most fun and hard encounters. we did this on our 2nd run of serious tries. hit the enrage sometimes and them killed hin. he enrages exactly at our kill and the achievementsystem bugged and gave us no credit, however the lootbox contained hardmodeloot.

lineup:
DK tank, arms warrior, rogue, retri paladin, kittydruid, elemental shaman, hunter, firemage, holypriest, discipriest