ONLY TRIED IT ON HC!
I've searched, couldn't find anything so dno if it's a repost.
In Nexus HC (dno if it works on normal), when u get to the big open cave room, where Anomalus is, you will encounter several groups of mobs, wherein there'll be orbs of lightning. Normally you'd be killing the orbs at first, but yesterday we realized that our hunter could kill the orbs from range without aggroing the group itself.
All the HCs are pretty easy to get around, but if you're having problems, try this out, i can upload screens if i go there again today, won't be home before late and ain't got screenies on my laptop here.
It won't make it alot easier, but it's a help if you're in a party consisting mostly of freshly dinged lvl 80 players with green / questblue gear.