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Half-Life PS2 Cheats and Codes
Cheat menu cheats
| Cheat |
Effect |
| Up, Triangle, Up, Triangle, Up, Triangle, Up and Triangle |
Alien Mode |
| Up, Triangle, Down, X, Up, Triangle, Down, X |
Xen gravity |
| Right, Square, Up, Triangle, Right, Square, Up, Triangle |
Slow motion |
| Left, Square, Right, Circle, Left, Square, Right, Circle |
Invisibility |
| Left, Square, Up, Triangle, Right, Circle, Down, X |
Invincibility |
| Down, X, Left, O, Down, X, Left, O |
Infinite Ammo |
| Triangle, Square, Left, Right, Circle, X, Up, Down |
Bonus levels |
Unlock all Decay missions
Go to the Options, then Cheats. To enter the code you must have two controllers.
| Password |
Effect |
| 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 |
Bonus Alien Mission
Get an A-grade on all 9 of the Decay missions. If you successfully do this, you'll get to play a 10th level as a Vortigaunt alien. Getting an A-grade on this level will formally unlock the Alien Mode. (Note: the best way to ensure an A-grade for a level is to get at least 25 kills.)
Choose any given letter by the game title you need to find PS2 cheats or Codes for.
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
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