Playstation 2 : Half-Life Cheats
Below are the cheats, hints, and tips that Game Gas knows about for Half-Life. On the right are
websites that may have additional cheat codes, hints, or tips for Half-Life.
Slow Motion:
If you look at the credits, (all the way to the bottom) You'll see the code: Right, Square, Up, Triangle, Right, Square, Up, Triangle
Extra health
Buy a soda from the random soda machines. If you are impatient, shoot the soda machine.
Alien mode
At the cheat menu, press Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle.
Look through dead scientist's eyes
When you walk around, you will at some point encounter dead scientists, sitting with their back towards a wall. Crouch and then crawl toward the dead scientist. You will glide through him. Continue to walk until you reach the wall, then turn around. You can now see the way the developers have made the skins for eyes and mouth and everything else. You can actually look through the scientist eyes.!
Dead guard talks
After the experiment goes awry, go get the crowbar and come back to the place where the scientist is performing CPR on the dead guard. If you smack the guard with your crowbar, he will talk.
Approach a guard or scientist that tells you information about something. Use a gun that will kill them in one shot, such as the caliber pistol or the crossbow. Shoot them just as you approach them, immediately before they start talking. If done correctly, the guard or scientist will fall to the ground dead, but will still tell you what they originally intended to say.
Xen gravity
At the cheat menu, press Up, Triangle, Down, X, Up, Triangle, Down, X
Bonus levels
Press Triangle, Square, Left, Right, Circle, X, Up, Down at the cheat screen. Choose the "Extras" at the options screen to load new levels found from other discs, such as the Official US PlayStation Magazine Issue 57 (June 2002) demo disc. To get a bonus level in Decay, get one A in every section. The final level will then become available.
Barney gets cut in half
When you enter the room where the lasers are shooting out the walls, run through. There should be a Barney (security officer) on the floor. Watch carefully and you can see the laser go across and literally cut him in half.
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.
Defeating Gonarch
The Long Jump module can be used for more than moving between floating platforms. You can get extra height when you jump into a wall or other object. When you first get dumped in Gonarch's lair, to your right you may see white "plants" coming out of the ground. You can use these as stepping stones to get up on the raised area in the middle. This may not easy, but if you get up there Gonarch will have trouble hitting you with any attacks. It is best to use weapons like the crossbow for this part. You can also use the long jump technique to get to other places you are not supposed to, and it is useful for getting past annoying opponents quickly.
Infinite ammunition
At the cheat menu, press Down, X, Left, Circle, Down, X, Left, Circle.
Using the pistol
Use the following trick to save ammo for all guns other than pistol. Most creatures or persons can be killed with five or less direct shots of the pistol.
Crabs: 2 shots or 1 crowbar hit
Zombies: 4 shots
Electric Aliens: 3 shots
Trip Bomb: 1 shot
Machinegun on stand: 5 shots
Soldiers: 5 shots
Dogs: 3 shots
Spitters: 4 shots
Saving ammunition
Do not waste precious pistol ammo on headcrabs. Use your crowbar, as it is more useful.
Using guards
If you have a guard, get him close enough and he will take care of almost anything for you. The only time you ever need to fire is if the creature is close to the guard.
Partial invincibility
When in decay mode and are playing both people, the second person is not invincible, even if you enable the "Invincibility" code.
Man in blue
Enable the "Alien mode" code and start a new game. Go through the hall past the main security room and go straight instead of right. A short way down that hall is the man wearing the blue suit. Use your electric attack to break the window and jump in. If you try to attack the man with the blue suit, it will not work.