CheatCodes.com has all the official Half-Life 2 PC cheats to unlock everything. If you know of any that we don't have, please let us know.
In order to do this interesting cheat, open up the console and type in sv_gravity 150. It will be just like halo 2. If it does'nt let you type in sv_cheats 1 first.
To spawn a friendly turret open up the console and type in ent_fire npc_turret floor setrelationship "player d_li 99 (sv_cheats 1 1st if necessary). You can maybe do this for all enemies too.
To give npcs weapons just enable developer console then type npc_create_equpment weapon_smg1 or any weapon that you want then just spawn a human & they'll have the weapon. p . s . People like breen, eli, gman, kleiner (etc) won't have weapons when you spawn them weapons because they don't have any weaapons in the game.
First typ ~ to get in the developers console and type notarget and be invisible type it again to be visible.
First press ~ to get in the developers console and type noclip to walk through walls, then to go back just type noclip again.
I would like to note that you do not have to wait "a few minutes" as posted below. Open up the developer console (~) and type "sv_cheats" 1 to enable cheats. Now type "impulse 101" and you will receive all weapons with max ammo.
When you have typed in sv_cheats 1 and after you've waited a few minuets you type in god and it will give you god mode.
When you start the Sands Trap map, you will find some rocks. Someone will tell you not to step on the sand because a creature will attack. You will have to jump on the rocks. When the rock ends and only sand remains, use your gravity gun. Use it to place a door or wooden piece in the sand and stand on it. Then, place another object in front of it. Jump on it, remove the first object, and place it in front. Continue to do this until you reach rock again and the creature will not appear.
Found some tricks that we don't have? Got some helpful hints, tips, or tactics we don't know about? Tell us and you could win a free PC game (or any other game you want for any video game system)!