Unlock all co-pilots:
Input Up, Down, Up, Down, Up, Down, Up, Down as a password.
All missions and helicopters available in 2 player mode:
Input Triangle, Down, Triangle, Down, Square, Up, Square, Up as a password.
All helicopters available in 2 player mode:
Input Down, Down, Down, Down, X, X, O, O as a password.
Hidden ending:
Input Square, Down, X, Down, Right, Right, Up, Up as a password.
Then, finish mission 16 to watch the alternate ending.
One player mode passwords:
Mission - Password
Mission 2 - X, Down, Left, Left, Square, O, O, Right
Mission 3 - Triangle, Up, Left, Right, Down, Triangle, O, Up
Mission 4 - Down, Down, Square, Square, Left, Right, O, X
Mission 5 - Right, Right, X, O, Down, Up, Down, Up
Mission 6 - Square, O, X, Square, Triangle, Left, Up, Right
Mission 8 - Right, Down, Left, Up, Triangle, Down, Up, Down
Mission 9 - O, O, Right, Up, Right, Up, X, X
Mission 10 - X, Down, Down, Down, Down, X, Left, Right
Mission 11 - Triangle, Up, O, Down, Square, Left, X, Right
Mission 12 - Up, Up, Triangle, Triangle, Left, Left, O, O
Mission 13 - Left, Down, Left, Down, Square, O, Square, O
Mission 14 - Down, Down, Down, Down, X, X, O, O
Mission 15 - Square, Right, Left, O, O, Up, Down, Square
Mission 16 - Down, Up, Down, Up, Triangle, O, Triangle, O
Two player mode passwords:
Mission - Password
Mission 2 - Right, Up, Square, X, Up, O, Up, Right
Mission 3 - Left, Down, Left, Down, Up, Up, Up, Up
Mission 4 - Square, X, X, Square, O, Triangle, Triangle, Square
Mission 5 - O, O, Square, Down, Down, Square, X, X
Mission 6 - X, Up, O, Down, Triangle, Left, Square, Right
Mission 7 - Up, Down, Down, Down, Right, Left, Left, Left
Mission 8 - Left, Left, Triangle, Right, Right, Triangle, Up, Up
Mission 9 - Square, Square, Square, O, Down, Down, Down, Left
Mission 10 - O, Up, Left, Square, Up, Left, Down, Down
Mission 11 - Triangle, O, Triangle, O, Up, Up, Down, Down
Mission 12 - Up, Down, Left, Right, O, O, Up, Square
Mission 13 - X, Left, Left, Left, Square, Triangle, O, X
Mission 14 - Left, Down, Left, Down, Square, O, Square, O
Mission 15 - Down, Down, Down, Down, X, X, O, O
Mission 16 - Triangle, Down, Triangle, Down, Square, Up, Square, Up
