Press Right, Square, Up, Triangle, Right, Square, Up, Triangle at the cheat screen.
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100%
Invisibility
Added on
at
Press Left, Square, Right, Circle, Left, Square, Right, Circle at the cheat screen.
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100%
Floating doctor in wheelchair
Added on
at
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.
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99%
Xen gravity
Added on
at
Press Up, Triangle, Down, X, Up, Triangle, Down, X at the cheat screen.
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86%
Starting tips
Added on
at
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.
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86%
Man in blue
Added on
at
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.
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78%
Alien mode
Added on
at
Press Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle at the cheat screen.
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or
78%
Bonus levels
Added on
at
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.
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or
75%
Extra health
Added on
2003-11-23 at 13:37:52
Buy a soda from the random soda machines. If you are impatient, shoot the soda machine.
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or
73%
Invincibility
Added on
at
Press Left, Square, Up, Triangle, Right, Circle, Down, X at the cheat screen.
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or
71%
Dead guard talks
Added on
at
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.
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or
67%
Defeating Gonarch
Added on
2003-11-23 at 13:37:52
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.
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or
67%
Saving ammunition
Added on
at
Do not waste precious pistol ammo on headcrabs. Use your crowbar, as it is more useful.
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or
67%
Using guards
Added on
at
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.
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or
63%
Unlimited ammunition
Added on
at
Press Down, X, Left, Circle, Down, X, Left, Circle at the cheat screen.
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or
60%
Sniper target
Added on
2003-11-23 at 13:37:52
Get to the part in the Surface Tension level where you are outside the building with all of the tripbombs and missiles overhead. Kill the aliens dropped by the alien ship. Then, continue to the right and go through the "alley", then go left to see a man on the ground. Note: Do not kill any snipers. Continue straight and over the barbed wire to the left. Go up the fallen tower and jump over both vent shafts. To the left, you can see a broken building with a flat surface , Jump to it. On your right will be a broken wall. Jump and climb up it. Go to the right until you see a small crack on the roof that you are standing on. Go down it carefully. Turn on your flashlight and look to your right. You should see the sniper as a target with a gun.
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57%
Using the pistol
Added on
at
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
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50%
Look through dead scientist's eyes
Added on
2003-11-23 at 13:37:52
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.!
