Retro Game Cheats for Half-Life (PlayStation 2)
Effect: Invincibility
When:
At cheat screen
How:
Press Left, Square, up, triangle, right, circle, down, X
Submitted By:
Effect: unlock unlimited ammo
When:
Go to the Cheat Code screen in the Options menu and enter the following cheat to unlock Unlimited Ammunition
How:
enter the following cheat to unlock Unlimited Ammunition: DOWN, X, LEFT, CIRCLE, DOWN, X, LEFT, CIRCLE. Press START to confirm code. If done correctly, the code will appear in the box to the right.
Submitted By:
Unknown
Effect: unlock alien mode
When:
Go to the Cheat Code screen in the Options menu and enter the following cheat to unlock Alien Mode
How:
enter the following cheat to unlock Alien Mode: UP, TRIANGLE, UP, TRIANGLE, UP, TRIANGLE, UP, TRIANGLE. Press START to confirm code. If done correctly, the code will appear in the box to the right.
Submitted By:
Unknown
Effect: Invisibility
When:
At the cheat screen
How:
Press Left, square, right, circle, left, square, right, circle
Submitted By:
Effect: Slow motion
When:
At the cheat screen
How:
Right, square, up, triangle, right, square, up, triangle
Submitted By:
Effect: unlimited ammo
When:
cheat code section of the options screen,activate them byat any time from the menu
How:
down,x,left,o,down,x,left,o
Submitted By:
Unknown
Effect: Incincibility.
When:
During play.
How:
left,square,up,triangle, right, circle,down,X.
Submitted By:
Unknown
Effect: alien mode
and
xen gravity
When:
cheat menu
How:
ailen mode:up tri up tri up tri up tri
xen gravity up tri down X up tri down X
xen gravity up tri down X up tri down X
Submitted By:
Effect: Low gravity
Effect: Xen Gravity
When:
At the cheat menu
How:
Go to the cheat menu and press up,triangle,down,x,up,triangle,down,x
Submitted By:
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