Unlock all co-pilots:
At the password screen, enter Up, Down, Up, Down, Up, Down, Up, Down.

All items:
At the password screen, enter X, Square, Circle, Circle, Square, Circle, Circle, R1, R2.

Level Passwords:

2 X, Down, Left, Left, Square, Circle, Circle, Right

3 Triangle, Up, Left, Right, Down, Triangle, Square, Up

4 Down, Down, Square, Square, Left, Right, Circle, X

5 Right, Right, X, Circle, Down, Up, Down, Up

6 Up, Up, Left, Right, Down, Down, X, X

7 Square, Circle, X, Square, Triangle, Left, Up, Right

8 Right, Down, Left, Up, Triangle, Down, Up, Down

9 Circle, Circle, Right, Up, Right, Up, X, X

10 X, Down, Down, Down, Down, X, Left, Right

11 Triangle, Up, Circle, Down, Square, Left, X, Right

12 Up, Up, Triangle, Triangle, Left, Left, Circle, Circle

13 Left, Right, Square, X, Up, Down, Circle, Triangle

14 Left, Left, Up, Right, Right, Up, Down, X

15 Square, Right, Left, Circle, Circle, Up, Down, Square

16 Down, Up, Down, Up, Triangle, Circle, Triangle, Circle