Half-Life

Strategy Guide/Walkthrough/FAQ

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  • Invincibility

    At the cheat menu, press Left, Square, Up, Triangle, Right, Circle, Down, X.

  • Infinite ammunition

    At the cheat menu, press Down, X, Left, Circle, Down, X, Left, Circle.

  • Invisibility

    At the cheat menu, press Left, Square, Right, Circle, Left, Square, Right, Circle.

  • Slow-motion mode

    At the cheat menu, press Right, Square, Up, Triangle, Right, Square, Up, Triangle.

  • Alien mode

    At the cheat menu, press Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle.

  • Xen gravity

    At the cheat menu, press Up, Triangle, Down, X, Up, Triangle, Down, X.


    Game Shark Codes

    Master Code (Must Be On)EC8783A8 1431D934
    Unlock Alien Mode Cheat4CA573BA 1456F025
    Unlock Infinite Ammo Cheat4CA57372 1456F025
    Unlock Invincibility Cheat4CA5735A 1456F025
    Unlock Invisibility Cheat4CA5738A 1456F025
    Unlock Slow-Motion Cheat4CA573A2 1456F025
    Unlock Xen Gravity Cheat4CA57342 1456F025


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