Cheat mode
Select the "Extras" options at the main menu, then enter one of the following codes. The codes only affect Quick Play mode. 

Two player co-op mode
Enter CHUWAY as a code.

Stamina disabled
Enter NOTTIRED as a code.

Ball trails always on
Enter ONFIRE as a code.

Beach ball
Enter BOUNCY as a code.

Double unleash icons
Enter PIPPED as a code.

Super clash mode
Enter CLASHY as a code

Super unleash clash mode
Enter BIGDOGS as a code.

Win in campaign mode
Enter CHAMPS as a code. In campaign mode, highlight a team but do not select it. Stay on the menu and press Square(2), Triangle to instantly win against the selected team.