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Half-Life

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GF Rating
7.4

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Cheats, Codes & FAQs

Passwords brought to you by GameFAQs

Unlock all Decay missions

Go to the Options, then Cheats. To enter the code you must have two controllers.

  • p2_R3, p1_L3, p1_up, p1_up, p2_down, p2_down, p1_left, p1_right, p2_left, p2_right, p1_X, p1_O, START
    All Decay missions unlocked including bonus mission Xen Attacks