WinBack 2: Project Poseidon [Xbox]
Bonus multi-player characters:
Successfully complete the game with an "A" rank on all missions under each game's difficulty setting.
Extra Options:
Successfully complete the game. The "Extra Options" menu allows the game's movies and music to be played.
Shadow Stalker difficulty:
Successfully complete the game to unlock the "Shadow Stalker" difficulty setting in a new game.
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