All cheats for this game by platform:
Xbox 360
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Achievements
Complete each achievement to get the allotted gamerscore:
Exploring Jupiter (20) - Make it to Jupiter.
Exploring Saturn (20) - Make it to Saturn.
Exploring Uranus (10) - Make it to Uranus.
Good Start (10) - Get 12,000 points in the first stage.
Mars Attack (30) - Make it to Mars.
Mother Earth (30) - Make it to Earth.
Partnership (10) - Obtain a score of 60,000 during an Xbox Live Co-op game.
Safety First (10) - Make it to Neptune without losing a life.
Sharp Shooter (10) - Kill all ships on the first 3 bonus levels.
Team Work (20) - Obtain a score of 200,000 during an Xbox Live Co-op game.
Too Good (20) - Win 50 Xbox Live Versus games.
Tough Guy (10) - Make it to stage 7 without obtaining any bonus weapons.