When being hit, just don't immediately get up, especially when you earn his enmity. Stay lying down until he hits you again to avoid combo, unless he ignores you. avoid the tripping floor because you will immediately on your foot after being hit, otherwise perform super jump. This would let your friends heal you.

When he cast Charybdis use flash to interrupt the casting, please have extra flash bugs in your inventory. the life powder is needed and you may want to bring along blue mushrooms and godbugs. For fluidity of damage dealing, have one healer (wide-range lv5) on your team.