Cheat mode (Half-Life 2)You can use one of the following cheat codes during game play: | Code: | Result: | | Up(2), Down(2), Left, Right, Left, Right, Circle, X | Restore health | | Triangle, Circle, X, Square, R1, Triangle, Square, X, Circle, R1 | Full ammunition (Gravity Gun) | | L1, Up, R1, Up, L1(2), Up, R1(2), Up | Invincibility | | Left(4), L1, Right(4), R1 | Level select | | Triangle, Up, Triangle, Right, Triangle, Down, Triangle, Left, Triangle, Up | AA | | L1, Down, R1, Down, L1(2), Down, R1(2), Down | Kill | | Up(3), L1, Up(3), R1, Up(2) | No Clipping mode | | Down(3), L1, Down(3), R1, Down(2) | Enemies do not target you | | L1(2), R1(2), L1, R1, L1, R1, Left, Right | Wireframe cycle |
Cheat mode (Half-Life 2: Episode One)You can use one of the following cheat codes during game play: | Code: | Result: | | Up(2), Down(2), Left, Right, Left, Right, Circle, X | Restore health | | Triangle, Circle, X, Square, R1, Triangle, Square, X, Circle, R1 | Full ammunition (Gravity Gun) | | Left(4), L1, Right(4), R1 | Level select |
Cheat mode (Half-Life 2: Episode Two)You can use one of the following cheat codes during game play: | Code: | Result: | | Up(2), Down(2), Left, Right, Left, Right, Circle, X | Restore health | | Triangle, Circle, X, Square, R1, Triangle, Square, X, Circle, R1 | Full ammunition (Gravity Gun) | | Left(4), L1, Right(4), R1 | Level select |
Cheat mode (Portal)You can use one of the following cheat codes during game play: | Code: | Result: | | Down, Circle, X, Circle, Triangle, Down, Circle, X, Circle, Triangle | Create box | | Left(4), L1, Right(4), R1 | Level select | | Up, Triangle(2), Square(2), X(2), Circle(2), Up | Fire energy ball | | Up, Triangle(2), Circle(2), X(2), Square(2), Up | Fire rocket projectile | | Up, Left, Down, Right, Up, Left, Down, Right, Triangle(2) | Portalgun ID 0 | | Up, Left, Down, Right, Up, Left, Down, Right, Square(2) | Portalgun ID 1 | | Up, Left, Down, Right, Up, Left, Down, Right, X(2) | Portalgun ID 2 | | Up, Left, Down, Right, Up, Left, Down, Right, Circle(2) | Portalgun ID 3 | | Triangle, X, Circle, X, Circle, Triangle(2), X, Left, Right | Portal placement anywhere | | Square, Circle, L1, R1, Left, Right, L1, R1, L2, R2 | Upgrade Portalgun |
Alternate title screen (Half-Life 2)Successfully complete Half-Life 2. Alternate title screen (Portal)Successfully complete the game to see the cake title screen. Hidden pumpkins (Half-Life 2: Episode Two)Set the system date to October 31. After you are ambushed by Hunters and Combine at a big house, drive along the road. Near where the supply cache is found you will see an old truck. Go up to it. There will be lots of pumpkins lying on the ground. Box head pictures (Portal)On the level where you get the companion cube after you run past the energy balls and are in the room with the three elevators, there are two doors leading to a catcher, and a platform that is pushed out of the wall. Walk up to the platform that is pushed out. Crouch behind it and walk through the opening. On the left hand side are a group of pictures of people with boxes for heads and hearts around them. Faster construction (Team Fortress 2)As an engineer, do not wait for your building. Simply whack it with the wrench so that it builds faster. Easier construction (Team Fortress 2)Dont build a turret, build a dispencer instead, then build a turret next to it, so then you will get more and more metal from the dispencer to build and upgrade the turret. Submitted By: doyle138 Portal how to defeat the computerWhen it drops the ball shoot a portal next to the furnace then shoot another portal near the switch press the button put ball in the furnace. Next the computer will send a rocket machine at you aim with portals so the missle hits the computer and repeat. Submitted By: kitsunekid Invicible gnom (Half-Life 2: Episode One)On the first chapter when alex contacts her dad go to the table next to the loked door the gnom is under it. Submitted By: kitsunekid
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