CheatCodes.com has all the official Portal PC cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Saturday May 25, 2013 for Portal are shown below.
If you use any cheats when playing, when you complete the game, a big "CHEATED!" will be displayed. You must use a save game that has no cheats to complete the game without the announcement.
Go into console (~) and type impulse 101 (make sure sv_cheats 1 is enabled).
Enter sv_portal_no_fail 1 in the command box it does not work on layers of non flat land.
Bring up the command bar and enter npc_create npc_ then for the npc name like gman or headcrab or even zombie.
After doing the sv_cheats 1 thing, press ` (~) to open the console and type: "noclip" and you will fly through walls.
After enabling cheats, type: "notarget" and enemies won't see you.
First, enable cheats. Then type "god" and you can't die anymore.
If you have already done the sv_cheats 1 cheat, then type: "impulse 101" and you will get the weapons from half life.
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)!