OP needs to do Coil Turn 2 enrage method. That's exactly what he's looking for. You just sit there eating ALL the damage while enjoying the rave lighting... hum I mean while DPSing the heck out of the boss. It's a fun fight for the healers which get to go all out AoE heals for once, but rather straightforward for the rest. Having one (or a few) battle like this in the game is fine, but too many would make things dull as hell pretty fast.