Nymei

I'm at the part where you fight D- Garbodor in west gaeren, there is no pc and my team cannot handle it at all. Could it be possible to add a pc or have the possibility to go back to east Gaeren? I tried blacking out but I get sent back at the healing star, I tried maxing the level cap, anything. I can't land an hit on the thing, since the little damage my team manages to make gets healed by Garbodor's ability. Ps. Thank you for all the work you put in for the game, it's honeslty a work of art.