PS2 Cheats: Half-Life Cheats

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Half-Life Cheats

The following codes must be entered at the Cheat Menu


Left, Square, Up, Triangle, Right, Circle, Down, X.

Infinite ammunition 

Down, X, Left, Circle, Down, X, Left, Circle.


Left, Square, Right, Circle, Left, Square, Right, Circle.

Slow-motion mode 

Right, Square, Up, Triangle, Right, Square, Up, Triangle.

Alien mode 

Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle.

Xen gravity 

Up, Triangle, Down, X, Up, Triangle, Down, X.


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