sav file with dj, zombie and alien avatar totrial complete world 1 99.99999999999999999999999999999999999999999999999999999%completeand area 6 or 7 unlocked!!
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)