Unlock Samurai Armor:
Pause the game, then press Y, X, Right, Left, L, R, Down, Up.
Unlock Samurai Helmet:
Pause the game, then press X, Y, R, L, X, Y, R, L.
Unlock Punk Top:
Pause the game, then press Up, X, Down, Y, Left, L, Right, R.
Unlock Punk Bottom:
Pause the game, then press Left, R, L, Right, Y, Y, X, X.
