Nah, the first few floors are pretty tame as far as defenses go.  But things are only going to get worse past level 5.  When you get to Level 10...that'll be a big roadblock.  Not to say that the horrible things on levels 6-9 won't be giving ya plenty of trouble, but none of<em>them</em>are going to be roleplayed by<em>me</em>.   ;D