G1 Starscream:
Press B, A, B, RB, Y, RB at the Cheat Codes menu.

Gold Optimus Prime in multi-player:
Press Up, Down, Left, Left, Right, Down at the Cheat Codes menu.

Gold Megatron in multi-player:
Press Down, Up, Right, Right, Left, Up at the Cheat Codes menu.

No weapon overheat:
Enter LB, X, A, LB, Y, LB at the Cheat Codes menu.

Always in Overdrive mode:
Enter LB, B, LB, A, X, RB at the Cheat Codes menu.

Unlimited turbo:
Enter B, LB, X, RB, A, Y at the Cheat Codes menu.

No Special cooldown time:
Enter RB, X, RB, RB, X, A at the Cheat Codes menu.

Invincibility:
Enter RB, A, X, LB, X, X at the Cheat Codes menu.

Extra Energon from defeated enemies:
Enter Y, X, B, RB, A, Y at the Cheat Codes menu.

Increased weapon damage in robot form:
Enter Y, Y, RB, A, LB, Y at the Cheat Codes menu.

Increased weapon damage in vehicle form:
Enter Y, B, RB, X, RB, LB at the Cheat Codes menu.

Melee instant kills:
Enter RB, A, LB, B, RB, LB at the Cheat Codes menu.

Lower enemy accuracy:
Enter X, LB, RB, LB, RB, RB at the Cheat Codes menu.

Increased enemy health:
Enter B, X, LB, B, RB, Y at the Cheat Codes menu.

Increased enemy damage:
Enter LB, Y, A, Y, RB, RB at the Cheat Codes menu.

Increased enemy accuracy:
Enter Y, Y, B, A, X, LB at the Cheat Codes menu.

Special kills only mode:
Enter B, B, RB, B, A, LB at the Cheat Codes menu.

All Shanghai missions and zones:
Enter Y, LB, RB, LB, Y, A at the Cheat Codes menu.

All West Coast missions and zones:
Enter LB, RB, RB, Y, RB, B at the Cheat Codes menu.

All Deep Six missions and zones:
Enter X, RB, Y, B, A, LB at the Cheat Codes menu.

All East Coast missions and zones:
Enter RB, LB, RB, A, B, X at the Cheat Codes menu.

All Cairo missions and zones:
Enter RB, Y, A, Y, LB, LB at the Cheat Codes menu.

All upgrades:
Enter LB, Y, LB, B, X, X at the Cheat Codes menu.

Low gravity mode:
Enter X, X, Y, LB, Y, LB at the Cheat Codes menu.

Play as Decepticon Seeker Warrior MP in Decepticon based single player:
Enter X, Y, X, LB, A, LB at the Cheat Codes menu.

Play as Autobot Protectobot Scout MP in Autobot based single player:
Enter RB, LB, LB, Y, X, A at the Cheat Codes menu.

G1 Ironhide in single player:
Enter LB, RB, RB, A, B, Y at the Cheat Codes menu.