Tips for phase two:
*You can choose not to grab an add and just run behind another party members add, but each add will do more damage. And this fight will consume a lot of the healers mp with all of the dots, unavoidable damage, etc.
*If a party member dies while the adds are active, everyone needs to kill his add as whoever it targets next will receive the debuff and cost the healer to much mana. The healer should wait to respawn the dead party member until after the move is finished and people are healed. Someone should pick up a new add right before the boss uses his full room aoe again so there are four frozen stone mobs to absorb the attacks damage instead of 3 (it should be right before the boss' move because it will do alot of damage being only 1 active one).