Just load this game on an emu the other day just to try it out since I've heard so much about it...GREAT GAME!! ( ゜∀ ゜Too bad though that Achi went bonker in the end. Still, I'm really looking forward to the sequel!
Or when your player dies, you can say in code, if enemy exists, do nothing, but if enemy does not exist, then create enemy at certain spot. (This would be a pain tho for lots of emeies)