I personally prefer people spreading out, then I don’t need to dodge at all when he drops AoE’s (unless I get the “misty” one, which is rare.)
The dodging method is a waste. The blue mist can be avoided by having one person sit out in ranged distance. That gives the melee in the group the ability to just “sit” there and dps. Alpha’s damage from his ice attack is triggered if you aren’t in the center of the AoE. If you stay in the center of it ( even if they all overlap ) you are safe. SO LONG as you have a person in ranged dodging the blue mist and fire/earth, its easy and keeps your dps safe.
His earth and fire are a joke. I run full berserker gear without any Toughness/Vit traits. Granted I use life-stealing food and dungeon pots. They keep me up through those attacks. If you aren’t using consumables in dungeons, I don’t know what to say…They are cheap and Very useful – Dungeon Master tips