Cups And International Teams
While on the "game mode" screen, hold down triangle and press square, X, X, circle, triangle, triangle.
While on the main menu, enter: up, left, R, L, X, O, Triangle. This will get your players to talk during the game.
Challenge Mode Complete
While on the main menu, hold L and press square, circle, square, X, circle.
Hold down square and press triangle, triangle, triangle, circle, circle, L.
Unlock Argentinian League
Hold down L and press square, circle, and triangle.