Batman The Movie Amiga Cheats
While the title page is displayed, type 'JAMMMM'. If it works the title screen will flip upside down and you will be in cheat mode. You will have unlimited lives. Press F10 to skip levels. The final screen will also be upside down if you are still in cheat mode. Retyping JAMMMM undo's the cheatmode and makes the intro and final screen flip back to normal.