Enter the following Cheat Codes from the "Difficulty Select Screen" when beginning a new game.
NOTE: After entering each code you'll hear Red Alert say the code was accepted.

• Complete Deep Amazon Level: LEFT, RIGHT, LEFT, LEFT, RIGHT, R1, R2, CIRCLE
• Complete Mid Atlantic Level: CIRCLE, SQUARE, CIRCLE, SQUARE, RIGHT, LEFT, LEFT, RIGHT
• Complete Alaska Level: R1, CIRCLE, R1, SQUARE, LEFT, LEFT, RIGHT, LEFT
• Complete Starship Level: LEFT, LEFT, RIGHT, CIRCLE, CIRCLE, RIGHT, RIGHT, LEFT
• Complete Earth: R2, R1, L1, L2, SQUARE, CIRCLE, SQUARE, CIRCLE,

Enter the following Cheat Codes from the Autobot HQ main menu screen:

• Infinite stealth: (Must have convert minicon equipped): UP, UP, DOWN, DOWN, L1, L2, L1, L2
• Infinite Powerlink: UP, DOWN, UP, DOWN, CIRCLE, SQUARE, SQUARE, CIRCLE
• Big Head Mode: CIRCLE, CIRCLE, CIRCLE, SQUARE, L1, L1, L1, L2
• Turbo Mode: L1, R2, R2, SQUARE, SQUARE, SQUARE, SQUARE, L1
• Disable Minicon Overload: R1, R1, L2, R1, R1, L2, CIRCLE, CIRCLE.

One Hit Kills
During gameplay, pause the game and enter cheat code: SQUARE, CIRCLE, SQUARE, CIRCLE, L1, L1, L2, L1.

Invincibility
During gameplay, pause the game and enter cheat code: R1, CIRCLE, CIRCLE, R1, R2, L1, L1, L2