- Get All Ninja Items
At the item selection
screen press Square(3), Circle, Square, Circle(x2), Left, Up, Down, Right, R2(x2).
- Level Select
At the level
selection screen hold Select + Square + Circle and press Right(x3), Up, Left, Down, R2.
- Increase Inventory Space
At the item selection
screen hold R1 + Square and press Right, Down, Left, Up.
- Display Map
While playing a game
hold Select to display the map, then press Circle(x5).
- Game Levels in the Mission Editor
Enter the mission
settings screen in the mission editor then hold Circle and press Up(x2), Down(x2), Left,
Right.
- All Missions
Enter
the custom mission screen in the mission editor then hold R2 + Circle and press Up,
Down(x2), Right, Left(x2).