Level skip: Hold Left Mouse Button + [Delete] + [Help]
while the next level loads. The screen will flash to confirm
correct code entry. Press any key to advance to the next level.
Cheat mode: Pause game play and type irem to enable cheat
mode and invincibility. Press one of the following keys to activate
the corresponding cheat function. Note: It may be necessary to
press [Shift] while pressing the key.
