Superman Cheat - Go to the in-game options and locate the cheat menu. Enter B, B, X, A and the soldier you play will be um-vincible.

Team Superman - Go to the in-game options and locate the cheat menu. Enter B, B, X, B and the NPC soldiers on your team will be um-vincible.

Instant Victory, Just Add Water - Go to the in-game options and locate the cheat menu. Enter B, B, X, Y and the current level will be cleared successfully.

Instant Ammunition, Just Add Water - Go to the in-game options and locate the cheat menu. Enter B, B, X, X and all of you and your teammate's ammunition will be reset to their starting amounts. Note this cheat will count the number of times you've used it and may affect your stage evaluation.