Portal

 Start the desired advanced chamber. Display the console window and enable the sv_cheats 1 code. Then, enable the noclip code and fly to the level's exit. However, do not enter the elevator. Enter the noclip code again, then sv_cheats 0. Save the game. Load the saved game, then exit the testing chamber.

You can pick them up, toss them around, make them fall indefinitely through two portals, drop a cube on them, etc. Also try the following. Use the incandescent particle field in front of the exit. The computer voice said before that all objects other than yourself and the portal gun will be destroyed. Pick up a turret and toss it into the energy field. The turret will say "ayayayay" as if being electrocuted and disintegrate.

The primary objective is to create two portals, one on either side of the field. First, enable the "Portal anywhere" code. Then, shoot one portal on the ground where the particle field is in the middle of the portal. To do this, aim your portal gun as close to the bottom of the field as you can that will still create a portal. Shoot another portal on the ground so that when you look through that portal, the line of the particle field cuts across the portal. Try and enter through the portal on the elevator side without touching the field. Once this is achieved, you may now shoot the color portal below the particle field anywhere you can in the elevator room. You will now have two portals on either side of the field. However, do not touch the field or both portals will be erased. Simply go through the portal and you may bring objects (for example, the companion cube) through to the next level. Note: Be careful where you shoot the portal in the elevator room; if you go through it you may fall through the map.

Play the level where you face off with the laser guided robots. Once you get past the first few robots, you must start dropping the boxes on the robots heads so that they fall over. In the little place that you find the first two boxes, crouch and walk behind where the boxes were. You will find a little room with odd music playing and graffiti on the walls that says things such as "The cake is a liar". There also seems to be an Xbox 360 with a pot inside of it. The Xbox 360 is overheating and boiling the water.

Follow the indicated steps to earn the corresponding Steam achievement. To view your achievement progress and stats, open the Steam client, select "Community", then search for the game hub for "Portal (Macintosh)". Click the "View Stats" option in the drop down list, then select the option that displays the achievements for your account.

Aperture Science: Earn gold medals on all Portal challenges.

Basic Science: Earn bronze medals on all Portal challenges.

Camera Shy: Detach security cameras from the walls.

Cupcake: Beat two Portal advanced maps.

Fratricide: Do whatever it takes to survive.

Friendly Fire: Knock down a turret with another turret.

Fruitcake: Beat four Portal advanced maps.

Heartbreaker: Complete Portal.

Lab Rat: Acquire the fully powered Aperture Science Handheld Portal Device.

Long Jump: Jump 300 feet.

Partygoer: Make the correct party escort submission position decision.

Rocket Science: Earn silver medals on all Portal challenges.

Terminal Velocity: Fall 30,000 feet.

Transmission Received: Find and receive all 26 radio transmissions.

Vanilla Crazy Cake: Beat all six Portal advanced maps.

Listen to the radio in the room you start out in. If the music sounds familiar, it is because the song is an up-tempo version of the "Still Alive".

In the holding cell you start at, walk up to the toilet and press [Use]. After a flushing sound the toilet will say "Thank you for your obeisance".