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Half-Life Cheats

PS2

Alien Mode
At the cheat menu, press Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle.
Infinite Ammunition
At the cheat menu, press Down, X, Left, Circle, Down, X, Left, Circle.
Invincibility
At the cheat menu, press Left, Square, Up, Triangle, Right, Circle, Down, X.
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.
Xen Gravity
At the cheat menu, press Up, Triangle, Down, X, Up, Triangle, Down, X.


Gameshark Half-Life Hacks
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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