Half-Life Cheats - PlayStation 2

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Downloadable Half-Life Cheats
cheat description   size
Apr. 20, 2011
Mar. 05, 2010
Mar. 05, 2010
Nov. 29, 2006
Nov. 29, 2006
Primary Collection of Cheats
Press [Left], [Square], [Up], [Triangle], [Right], [Circle], [Down], [X] at the cheat screen.

Unlimited ammunition
Press [Down], [X], [Left], [Circle], [Down], [X], [Left], [Circle] at the cheat screen. Note: This does not affect throwable weapons such as hand grenades and remote bombs.

Press [Left], [Square], [Right], [Circle], [Left], [Square], [Right], [Circle] at the cheat screen.

Xen gravity
Press [Up], [Triangle], [Down], [X], [Up], [Triangle], [Down], [X] at the cheat screen.
Starting tips
After the "accident", you will discover a scientist giving CPR to a security guard. Wait 15 to 20 seconds to see the outcome, which usually results in the security guard being revived. He is not useful at this time, but return to him after getting the crowbar. Kill him with the crowbar so he can not fire back to get his gun and ammunition.

Soon after this, you will ride an elevator upward. Have the gun ready. Shoot the monster attacking the security guard; a couple of shots should do it. This security guard can cover you until you reach the main entrance area.

One important tactic in the early game is to use your "allies" to your advantage. When you no longer require the services of a security guard, kill him and take his ammunition. A scientist is also useful in drawing enemy attack. Be careful not to harm an ally when another security guard is present, as he will attack you. Also be aware that monsters can sense your allies; and even if you crawl, monsters can hear your allies' walk.

The beginning of the game also has the following glitch. There is a scientist sitting in front of a damaged instrument panel, in the area of the first scientist who opened a door for you. This scientist is invincible. You can shoot or beat him with a crowbar, and all he will do is whine. This also saturates the area with a large amount of blood.

Extra health
Buy a soda from the random soda machines. If you are impatient, shoot the soda machine.

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.

Glitch: Floating doctor in wheelchair
Note: This trick requires a second player. When playing a Decay game with another player, get to the Rift level. When the handicapped doctor tells you to follow him and opens the door, do as he says. He will get in the elevator. Block his path so he cannot get in the elevator, but the door is open. Next, back up slightly and let him enter. Get behind him and run forwards while the other player pushes you from behind. The doctor should start to go down, and the door has closed on you, but it is still open. Jump frequently and press [Forward] quickly. If you jump onto the safety bar where the top of the other door is, he will get to the bottom of the elevator. If you stand on the bar, and he gets to the bottom, then he will launch back up and will float in the air. You cannot kill him with a regular gun from below. You must shoot him with the bazooka or from above to kill him.

Glitch: 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.

Glitch: 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.

Glitch: Partial invincibility
When in decay mode and are playing both people, the second person is not invincible, even if you enable the "Invincibility" code.

Glitch: Extra lasers
In the Surface Tension level, when you get to the storm drain hatch switch go to the tent to your right. Send one or two grenades behind the green boxes to blow up the Laser Trip Mines. Then, go back there and you should see a laser with no trip mine on it.

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