Gunship 2000

Invincibility
Hold L1 + L2 + R1 + R2 during
the entire loading screen with the helicopter that appears after
receiving the mission orders. The word "Cheat" will
appear in the upper left corner of the mission screen to confirm
correct code entry. Note: The helicopter can still crash into
mountains when this cheat is enabled.

Unlimited ammunition
Hold L1 + L2 + R2 + X during the
entire loading screen with the helicopter that appears after receiving
the mission orders. The word "Cheat" will appear in
the upper left corner of the mission screen to confirm correct
code entry.

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