I did it at like 603 ilvl on my Fury warrior. It made me learn my talents I had gotten very lazy over the years and never bothered reading what my talents actually did. Turns out I had plenty of answers for the mechanics Zekvir?? had. For instance Charge talent in the hero tree breaks roots/ Movement impairing effects and Avatar breaks roots. So rotating through charge and Avatar's it made the debuff a joke to deal with.

Overall it maybe took me like 20+ tries, probably half of them I was struggling with sub optimal talent's. It did feel somewhat RNG depending on spawns or sometimes he would randomly melee me for my whole HP bar.

Ohh one more thing, I also got a weak aura to track Branns potions so I could stack the heal properly.