Unlock Gold Characters
At the 'Main' menu select 'Cheat Codes' and enter the following codes to unlock the corresponding playable character for Multiplayer.
Unlock Gold Megatron:
Press Down, Up, Right, RIght, Left, Up.
Unlock Gold Optimus Prime:
Press Up, Down, Left, Left, Right, Down.
We have more cheats and tips for this game here, Transformers: Revenge of the Fallen cheats
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