Superman: The Man of Steel Cheats - Xbox

All levels and bonuses
Pause game play, then quickly press [R], [Black], [Y], [Black], [L], [White]. The sound of an explosion will confirm correct code entry. This will unlock all levels and bonus items such as Single Mission, Free Roam, Costume Select and more.

Unlimited health
Pause game play, then quickly press [Black], [White], [L], [X], [L], [White]. The sound of an explosion will confirm correct code entry.

X-Ray graphics
Pause game play, then quickly press [L]x2, [R], [L], [Y], [X], [White], [Black]x2, [White]. The sound of an explosion will confirm correct code entry.

Freeze graphics
Pause game play, then quickly press [R], [L], [Black], [White], [L], [Y]x2, [Black], [R], [White]. The sound of an explosion will confirm correct code entry.

Bonus costumes
The following costumes will become unlocked at various points throughout the game, after a particular mission.

Original
Golden Age
Silver Age Superman Red
Silver Age Superman Blue
The Return of Superman Black
Superman of the 90s
Kryptonian
Post-Our Worlds at War Mourning
Kingdom Come

Free roam option
Successfully complete mission 4 to unlock the free roam option. This allows you to replay any mission that has been completed in single mission mode.