Excalibur 2555 AD [cheats] Cheat mode Hold [Esc] to pause game play. Then hold [F12] and enter one of the following codes. Then, release all keys and press [Space] to resume game play. A message will confirm correct code entry. Effect / Code Full health [Up] three times, [Left] five times Full sword power [Up], [Up], [Left], [Left], [Right], [Right], [Left], [Left] Unlock all doors1 [Up], [Up], [Right]. [Right], [Up] four times Level skip [Left], [Right], [Left], [Up], [Right], [Up] three times