[RaNkeri]

Oh yeah, Ghosts n' Ghouls was also a though game to beat. Sure you had infinite continues, but the levels were tricky and there was only one checkpoint per level. The hardest part was that after you're ready to face the last boss, a fairy appears and tells you to travel back to camelot (1st level) and arm your self with a super weapon. So literally, you start the whole progress from very beginning armed with this "super weapon" which isn't really that great.

I finally managed to beat the game about one and a half years ago with emulator, thanks to save state.