Batman Cheats

In level 3, at the far-right end of the museum's first level is a 1-Up; go and grab it and then jump onto the rising platforms. When you reach the third platform, or until the screen starts to roll up, jump back down and the 1-Up should be there again.

When Batman is being shot, press Start to pause the game. And then hold the B button and press Start to resume the game. Batman will then be in his defensive position.