How to cheat the Challenge Maps & Advanced Chambers and get your achievements.

1. Load what map you want
2. Open Console Type in Sv_Cheats 1, then type in Noclip
3. Fly to the very end and undo noclip
4. Type in Sv_Cheats 0, Hit Escape, Save Game
5. Exit Game
6. Restart game
7. On Main Menu Screen Open Console and Type in Sv_Cheats 0 just to make sure it isnt still on
8. Load your save
9. Walk into the elevator
10.???????????
11. PROFIT!!!!!!!!!!!!!

[Marius]

@Hammbowning that's really weird as this method still should work. If the game says u have the achievement maybe steam bugged for some reason and it didn't register it. U could try to use SteamAchievementManager (SAM) and manually give yourself the achievement on steam if u want. It's not bannable so no need to worry about that

[swager]

i know this is an old post but ive tried everything and its not working. so i tried to get the advanced chamber achievements with cheats months ago but it wouldn't give them to me and now i came back to try again just in case and it still wont work.
so in the actual games achievement section in the main menu it says i have the cupcake fruitcake
and crazy vanilla cake achievements but on my actual steam account i dont have them and i really dont know what to do or if there is anything i can do.

[/RND\ Donut24]

THANKS MAN IT ABSOULETLY WORKS!I though i wouldnt get this silly achivement beacuse of least steps!I hate that!I could do least portal and time...BUT NOT LEAST STEPS.Still works for me:)

[Primal1nstincts]

still works

[VintenDio]

you sir are a GOD

[WhatsInYourWallet?™]

my favorite part was profit

[SamuraiMetallist]

IT WORKS!!! To avoid "cheated" message you need to load save after restarting the game! You need to restart!
Thank for guide!

[Jupiterpluto]

it just says cheated for me how do i stop that

[ItsRhuin]

dosent work for least steps, portal says "cheated" once you get to the evlevator and dosent count it

[LordofthePings]

ok