Superman Returns: The Videogame [Xbox 360]

God mode:
Press Up(2), Down(2), Left, Right, Left, Right, Y, X.

All power-ups:
Press Left, Y, Right, X, Down, Y, Up, Down, X, Y, X.

All unlockables:
Press Left, Up, Right, Down, Y, X, Y, Up, Right, X.

Unlimited city health:
Press Y, Right, Y, Right,, Up,, Left, Right, Y.

Golden Age Superman costume:
Save Metropolis from the tornadoes.

Pod costume:
Defeat Bizarro.

Achievements:
Complete the following achievements to unlock Xbox Live Gamerscore points.

Hero of Metropolis (200 points): Complete All Metro Events And Mini-Games.

Armageddon Averted (30 points): Complete Level 01: Meteor Storm.

Mr. What's-his-name (50 points): Complete All Mini-Games.

You Am Bizarro! (20 points): Complete The Bizarro Mini-Game.

Super Sonic (20 points): Finished All Fast Flyer Mini-Games.

Mr. Whiskers (50 points): Find All Kittens.

Souped-Up Superman (30 points): Obtain All 15 Power-Ups.

Frequent Flyer (30 points): Travel For 10,000 Miles.

Roadside Assistance (30 points): Pick Up 100 Cars Throughout The Game.

The Greatest Day (30 points): Play A Total Of 12 Hours.

Heavy Lifting (30 points): Lift 10,000 Tons Throughout The Game.

Additionally, there are seven secret achievements, all of which remain unknown at this time.