Metal Slug 3 Cheats

When your down to your last life on arcade mode press start on controller 2. This starts you off on player 2's controller when your in a tough spot, giving 3-5 new men. This is helpful for Mission 5 or some of the harder bosses. If you're quick enough you can die on the player 1 controller and press start on controller 2 and still continue. The only flaw to this is you wont be able to select the same character you had as player 1.

Complete the game on any difficulty, and the Ending Feature will be selectable.