Instructions
Pick any character you prefer at the "Character Select" screen. Although each character has different moves, executing their signature attack is the same for each one.
Build up your ki meter. Ki is the energy you use to perform special moves. As you fight and land blows, your meter slowly fills. There are three levels to the ki meter -- level one is green, level 2 is blue and level 3 is a lighter shade of blue.
Press "Back" on the directional pad and the "B" button together to perform your character's signature move. In this case, "Back" refers to your position on the screen. If you are on the left side of the screen and your opponent is on the right, you will press "Left" for this move.