Superman Returns – The Videogame – Platform: XBox

...cheats, codes, maps, saves, tips

Pause the game, and go into the options menu. This is called the Fortress
of Solitude, enter the cheats anywhere in here.

Result Code
Infinite Metro Health – Y, Right, Y, Right, Up, Left, Right, Y
Unlock All Power-ups – Left, Y, Right, X, Down, Y, Up, Down, X, Y, X
Unlock All Unlockables – Left, Up, Right, Down, Y, X, Y, Up, Right, X