Here are some cheats and tips for the game The Immortal.
Invincibility:
Enter a valid password and hold A when the name of
the level appears. Release the button when the level appears.
Level Password
2 cddff10006f70
3 f47ef21000e10
4 8fdfe31001eb0
5 94bfb43000eb0
6 563ff53010ac1
7 c250f63010ac1
8 e011f730178c1