Cheats42.net

All copilots:
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In the Passwords screen, type Up, Down, Up, Down,
Up, Down, Up, Down.
Fly Apache:
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Successfully complete Mission 14: Pick Up the Pieces.
Fly Chinook:
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Successfully complete Mission 4: Tan Terror Troy.
Fly Super Stallion:
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Successfully complete Mission 8: Saucer Attack.
Get Sarge as your copilot:
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On the Mission 16: Plastro's Revenge, you will be able to play
with Sarge by your side as copilot. Just look for him in the
Copilot Selection screen.
Passwords:
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Mission 2: Going Car-Razy
X, Down, Left (x2), Square, Circle (x2), Right
Mission 3: The Train That Could
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Triangle, Up, Left, Right, Down, Triangle, Circle, Up
Mission 4: Tan Terror Troy
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Down (x2), Square (x2), Left, Right, Circle, X
Mission 5: Bug Bath
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Right (x2), X, Circle, Down, Up, Down, Up
Mission 6: Uninvited Guests
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Square, Circle, X, Square, Triangle, Left, Up, Right
Mission 7: Ant in the Pants
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Square, Circle, X, Square, Left, Up, Right
Mission 8: Saucer Attack
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Right, Down, Left, Up, Triangle, Down, Up, Down
Mission 9: The Heat Is On
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Circle (x2), Right, Up, Right, Up, X (x2)
Mission 10: The Melting Pot
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X, Down (x4), X, Left, Right
Mission 11: River Rapids Riot
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Triangle, Up, Circle, Down, Square, X, Right
Mission 12: Nightmare Teddy
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Up (x2), Triangle (x2), Left (x2), Circle (x2)
Mission 13: Demolition Time
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Left, Down, Left, Down, Square, Circle, Square, Circle
Mission 14: Pick Up the Pieces
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Down (x4), X (x2), Circle (x2)
Mission 15: Have an Ice Day
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Square, Right, Left, Circle (x2), Up, Down, Square
Mission 16: Plastro's Revenge
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Down, Up, Down, Up, Circle, Triangle, Circle, Triangle
Unlock all helicopters in two-player mode:
Go to the Cheat Code menu, and enter Down, Down, Down, Down, X, X, O, O.
Tips
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Tip: Use your surroundings! The winch can be invaluable for making
it through missions when used to pick up items around you.