All Creatures:
At the Main Menu press Left, Right, Left, Left, Right, Right, Right, X.
All Multiplayer Maps:
At the Main Menu press Left, Right, Left, Left, Right, Left, Right, X.
Get Crystal:
At the in-game menu press Left, Left, Right, Right, Left, Up, Right, Down, Left, X, X.
Invulnerability:
At the in-game menu press Left, Left, Right, Right, Up, Up, Up, Up, X, Up, X.
Win Mission:
At the in-game menu press Left, Left, Right, Right, Down, Down, Down, Up, Down, Down, X.