Defuse is a game in which you're set to the task of disarming a bomb.Fail, and your Nintendo DS explodes!Joking, of course, but the game features three levels of difficulty and you're only given a limited amount of time to defuse the bombs.
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)