The Fight
Appears to be one tank fight. The only trick appears to be that he summons 2-3 Frozen Orbs, which are no aggro adds that spiral around shooting frostbolts at everyone. So, kill those. Kill him. Loot boss.
Here is the video:
https://www.youtube.com/watch?v=tLFMz-0WTew
Regards,
Exael