I actually have a rage-quitter to thank for clearing this... no really... DF'ed it when it first came out, and after a couple of wipes a DRG died and left mid fight. If he'd been raised he'd have had weakness, but instead he got replaced with a new DRG with no weakness to finish the fight. We killed him just as the Zantetsuken timer went off so prob wouldn't have done it if the player had accepted a revive and kept going.