When villains run rampant, only one man can rescue a world in peril. Superman may be invincible, but Metropolis is not. Player's choice matters, as Metropolis' destruction will affect your ability to progress. You must face the internal conflict facing Superman at every turn: will you pause your pursuit of super villains to stop a massive tornado sweeping through the city and save its civilians? This will be your greatest challenge.

Cheat mode
Press Start to pause game play to display the "Fortress of Solitude" menu. Enter one of the following codes at this menu to activate the corresponding cheat function. A sound will confirm correct code entry. Note: Some codes cannot be done until after level 3.

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.

Bizarro in Free Roam mode
Press Up, Right, Down, Right, Up, Left, Down, Right, Up. Fly to the marker at the top of the GNN building to change to Bizarro. To change back to Superman, go to the marker at the other end of Metropolis. Note: Enter this code when you load your game, at the menu that lets you choose Metropolis or Fortress of Solitude before starting.

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
Warworld (50 points): Visited and dominated Warworld.
Metallo Mastered (100 points): Stopped Metallo in the name of justice.
Me aM savE yOU 100 points): By you is Bizarro not undefeated!.
The Mongul Hordes (100 points): Vanquished Mongul once again.
Twisted (100 points): Saved Metropolis from the rampaging tornado.
Versatile Fighter (30 points): Perform 99 fighting combos.
Not That Super (0 points): Entered a cheat code.

Golden Age Superman costume
Save Metropolis from the tornadoes.

Pod costume
Defeat Bizarro.

Trophies
Complete the indicated task to unlock the corresponding trophy.
Bizzaro Unchampion: Complete all Bizzaro mini-games.
Globe Bowling: Pick up the Daily Planet globe.
Kitten Finder Extraordinaire: Rescue all 100 kittens.
Meteor Mayhem: Complete level 1.
Outstanding Valet: Pick up 500 cars.
Photo Finish: Defeat 500 opponents.

Break the sound barrier
When flying at hyper speed, Superman goes through stages where after an amount of time of continuous flying, he gains a burst in speed. He accelerates and becomes faster and faster. If you fly long enough (doing a lap or two of the entire city flying above the sea recommended), he eventually breaks the sound barrier. It is about the fourth jump in speed. You will know this has happened when the sound of him ripping through the air is suddenly silent. This is because Superman is traveling faster than his own sound.