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I would like to unlock all characters, as it would make it a little easier for me to play the game. I have tried entering the cheat code mentioned on this site at the main menu. I don't know whether you have to start a new game or what. I have tried entering it, but, it doesn't work for me. I have tried entering it on the title screen, and whilst in the Batcave, but, no luck. Can anyone please help?