Hold [Shift] + [Ctrl] and press C at the main menu to access the cheat menu.
Gain possession of the ball
When your opponent's goalie has the ball in his or her hands, stand in front of it and press the "kicking" ball button (either the Left Mouse Button, [Shift], or [Ctrl]) rapidly. If done correctly, you should have headed the ball into your control. Note: When goalie spins around to avoid you, follow the ball.
Mr. Clanky
Hold [Shift] when clicking on the shoes on the shelf. A sound will confirm correct code entry.
Play against other teams
Get to the P Division to play against the "Ticklish Tornadoes", "Salty Sea Cows", "Screaming Chihuahuas", "Spiffy Penguins", "Lumpy Gravies", and all the MLS Teams.
Play against the "Indoor Off The Wall Invitational" teams
Win the "Indoor Off The Wall Invitational Tournament" to play against the "Rug Burners", "Carpet Sweepers", "Turf Mowers" and "Abominable Cherry-Pickers".
Play against the "International Tournament" teams
Win the "International Tournament" in The P Division to play against all of the International teams including the "Fancy Pandas" from China, "Garlic Gladiators" from Rome, "Funky Pharos" from Egypt and many more.