At your main menu, select the "Cheat Codes" option. Then, use an Xbox 360 controller to enter one of the following codes to activate the corresponding cheat function. These codes prevent the game from being saved.

Effect	Code
All Cairo missions and zones	RB, Y, A, Y, LB(2)
All Deep Six missions and zones	X, RB, Y, B, A, LB
All East Coast missions and zones	RB, LB, RB, A, B, X
All Shanghai missions and zones	Y, LB, RB, LB, Y, A
All West Coast missions and zones	LB, RB(2), Y, RB, B
All upgrades	LB, Y, LB, B, X(2)
Always in Overdrive mode	LB, B, LB, A, X, RB
Extra Energon from defeated enemies	Y, X, B, RB, A, Y
Increased enemy accuracy	Y(2), B, A, X, LB
Increased enemy damage	LB, Y, A, Y, RB(2)
Increased enemy health	B, X, LB, B, RB, Y
Increased weapon damage in robot form	Y(2), RB, A, LB, Y
Increased weapon damage in vehicle form	Y, B, RB, X, RB, LB
Infinite turbo	B, LB, X, RB, A, Y
Invincibility	RB, A, X, LB, X(2)
Low gravity mode	X(2), Y, LB, Y, LB
Lower enemy accuracy	X, LB, RB, LB, RB(2)
Melee instant kills	RB, A, LB, B, RB, LB
No Special cooldown time	RB, X, RB(2), X, A
No weapon overheat	LB, X, A, LB, Y, LB
Play G1 Ironhide in Single Player mode	LB, RB, RB, A, B, Y
Play as Autobot Protectobot Scout MP in Autobot based Single Player mode	RB, LB(2), Y, X, A
Play as Decepticon Seeker Warrior MP in Decepticon based Single Player mode	X, Y, X, LB, A, LB
Special kills only mode	B(2), RB, B, A, LB