XIII Cheats for GameCube
If you wait until an enemy reloads his weapon and shoot him before he has a chance to fire it, you will get a full magazine for your weapon.
Here is some cheats for Xlll for game cube .
1. Get more ammo: hold left and right and press: right, left, y,y,,B,B.
2. Get back up:hold left and right and press:B,B,X,X.