After all the wipes for me we had a really good attempt, I went to the left side and said to my mate as long as she doesnt do the breath this side we win, that was the above attempt :P

Yea, there is a massive amount of dmg, its up there for rediculously hard bosses for me. I actually popped some cds in P1 on this attempt just to have a clean start to P2, that helped for me.