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CONTRA 4 CHEATS, CODES, HINTS AND MORE
There are no cheats for this game available for download...
Upgrade Weapons
Enter [Up], [Up], [Down], [Down], [Left], [Right], [Left], [Right], [B], [A], [Start] in the pause menu to fully upgrade your weapons. This code can only be used once per life (doing it again will kill you) and that it can only be used in Normal or Hard mode (in easy mode you have full upgrades automatically).

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