Guys I'm not having trouble at all on normal so far. I'm using diferent characters acording to the goals of the level and so far so good. W Lilith, A Lilith, A Hellraiser, M Lilith, Alchemist, Doomsday, Beast, Clansman, Crusader, etc. Maybe I didn't reach the level you guys are on right now, but no trouble so far. Not even close to lose.
EDIT: ahuhaha ok, that was too early. Now things are getting tougher on normal. Holy shit.