To shoot red and blue lasers instead of bullets (G.I. Joe style), pause the game, hold the right bumper, and insert the following button combination: left analog stick, left analog stick, A, right analog stick, right analog stick, B, left analog stick, left analog stick, X, right analog stick, right analog stick, Y. ("[direction] analog stick" means you should press the corresponding analog stick in, as a button). This can also be done while playing online, but the game's host must insert the code. No other player needs to worry.