Pause during a game, highlight the "Map" option, then hold Right + L2 + R2 + Circle + Square + X simultaneously. You should hear a sound to confirm the code entry. Enter the Options screen and choose the "Cheats" selection. You can then immediately end the level.
Pause during a game, highlight the "Map" option, then hold Right + L2 + R2 + Circle + Square + X simultaneously. You should hear a sound to confirm the code entry. Enter the Options screen and choose the "Cheats" selection. This cheat is unlocked permanently when you complete the game.
Pause during a game, highlight the "Weaponry" option, then hold L2 + Select + Circle + Square + X simultaneously. You should hear a sound to confirm the code entry. Enter the Options screen and choose the "Cheats" selection.
Pause during a game, highlight the "Briefing" option, then hold Right + L1 + R2 + Circle + X simultaneously. You should hear a sound to confirm the code entry. Enter the Options screen and choose the "Cheats" selection. This cheat unlocks all the movies, including the 4 that would normally only be unlocked when you complete the game on the hard difficulty setting.
At the title screen, highlight the "One Player" option. Then, hold Up + L1 + R2 + Select + Circle + X + Square simultaneously.
Caves -- Find the binoculars in the Colorado Interstate 70 level. They are located behind the first closed door on your left that you reach. Press Triangle to open the door. This reveals a passage. Go left, open another door, and enter the room. The box containing the binoculars is in this room.
Rockies -- Find the H11 sniper rifle on the first level (Colorado Rockies) to unlock the Rockies multi-player map. The H11 is near the waterfall and ice arch where you first meet Chance. Instead of jumping over the waterfall chasm, hang from the edge of the chasm and drop down into the tunnel. The H11 is in there.
Pharcon Site -- Find the girlie magazine in the Pharcon Lab, after you taze the guards. It is located after you go through the Mars exhibit.
Bunker -- Find the PK-102 in the Moscow Streets level. There is a point where two cars will try to run you over at the same time, and you have to leap and grab a pole above you to avoid them. After this happens, drop down, and go back and search the two newly crashed cars. Face the tail ends of the cars. The car on the right has the PK-102 inside. The cars are on fire, so search carefully. Additionally, after the cars crash an enemy will get out of each car. At least one of them has a M-79 grenade launcher.
Prison -- Complete the Aljir Prison Break-In level without using the crossbow. You will have to sneak and roll up to the first man before he makes it out in the open. Roll a lot, but do not roll into him. You also cannot run or he will turn around. You should be able to run up very close to the male guard and the female guard who chased down the second prisoner. The last guard turns and looks around quite a bit. Walk against the left wall, and hide behind the support. He will walk out past you, and then you can get him.
Agency Computer Lab -- Get the M79 in the Operating Room in the Agency Bio Lab Escape level. The Operating Room is the room where Elsa was talking about Liver cells with the two scientists. To get there, go into the vent that you came in from, and follow the hallways. The M79 is at the top of the Operating Room.
D.C. City Park -- Item to find: Dirty Laundry. Locate the dirty laundry; in one of the washing machines in the first Sniper Building of the New York City Slums District level.
Find the M-79 grenade launcher on the second to last level (New York Sewers) to unlock the following multi-player characters:
Unit 1 (armored trooper from the Bio-Lab Escape level)
Dr. Elsa Weissinger
SWAT officer (helped in the New York Slums level)
You can find the M-79 near the end of the level in the parking garage. Near the top of the stairs is an open doorway into the parking garage, where a black van is driving past. Instead of exiting the stairwell at that location, keep climbing up the stairs. There will be five Agency operatives scattered on the landings above armed with silenced HK-5s, grenades, and M-79s. Use the M-79 to clear them out. The M-79 is on the top landing.
Beat the Mcenzie Airbase Inteior level in under 3 minutes to unlock the following multi-player characters:
corpse virel test subject
More characters can be unlocked for Multiplayer mode if you complete the C-130 Wreck Site level in under three minutes. You will unlock the original characters from Syphon Filter:
Syphon Filter 2 Tips
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In the kazakhscot warehouse, (I think that's what it's called) there are two semi-tall grayish boxes with a grenade spawn on each one. Get up there, take the grenade, and keep trying to lock in on opponent. Once you can, throw the grenade. For one, if he wasn't screen cheating, instant kill, two, if he was screen cheating, it will still be hard to avoid the grenade due to all the boxes.
P.S. If you do this for the whole game and don't even get hurt, if you have an older brother, prepare for pain.
Submitted by: chris woofenden on December 01, 2006
Syphon Filter 2 Cheats
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If you have put on the infinite crossbow cheat(gameshark only I believe), any time that your chaseing Gregorov shoot him with it and you can get a flack jacket and some ammo (I forgot witch wepon).
Submitted by: ofortuna
on December 28, 2002
This will unlock multiplayer stuff.
Lev. 1 - H11, waterfall cave = Colorado Rockies Arena
Lev. 2 - Beat in under 3 mins = Silly Characters
Lev. 3 - Binoculars, first tunnel's left door = Caves Arena
Lev. 8 - Kill Archer with 1 shot = Jungle Arena
Lev. 8 - Complete in under 3 mins = Syphon Filter 1 Characters
Lev. 9 - Girlie Mag, locker by two guard = Pharcom Incubator Lab Arena
Lev. 11 - Kill first guards quickly = Disco Basement Arena
Lev. 12 - PK-102, In one of two crashed cars = Rhoemer's Bunker Arena
Lev. 13 - BIZ-2, white car at start = Surreal Arena
Lev. 15 - Complete without using crossbow = Aljir Prison Arena
Lev. 18 - M-79, above autopsy room = Agency Computer Lab Arena
Lev. 19 - Dirty Laundry, washing machine = DC City Park Arena
Lev. 20 - M-79, top of car park stairs = Syphon Filter 2 Characters
Submitted by: anonymous on February 18, 2003