So is Oliver!
It's the only one that has a timer on it - which apparently still counts down after you free Astarian - his boss power is pretty impressive and they seem to have improved his AI. He ends up flying to the parts of the battle not illuminated by sunlight.
Second time I went in cheesy. I
illuminated the circle and attacked cazador before any dialogue took place. Like any good villian he still gave his evil speech but did so in the middle of the battle.
I found House of Grief little changed from other modes but Viconia has some pretty good powers
if she shadow steps into a dark square.