Portal Test Chamber 16
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Test Chamber 16
testchmb_a_11.bsp 
This Test Chamber is the seventeenth level of the game, and introduces players to Turrets, and the ways in which they can be avoided or disabled.
Hazards
Walkthrough
- Go at the end of the hallway and wait for the door to open.
- Go through the door and knock over the turret and wait for it to shut down.
- Walk to the end of the small hallway and stop before the red beam.
- Look to the left - along the beam. Run to the right and while you do that, shoot a portal behind the turret.
- Shoot the other portal on the wall near you and go through it. Knock the turret over.
- Head to the left. There's another turret waiting on top of the stairs.
- Quickly peek around the wall and fire a portal on the wall behind the turret and the other one on the wall near you.
- Knock the turret over and go down the stairs and head to the left.
- Shoot a portal on the ceiling over the turret and the place the other portal on the floor near you.
- Take one of the Weighted Storage Cubes and drop it through the portal. It should knock the turret over.
- Now for the other turret: Put a portal on the ceiling over the other turret (there is an X).
- Drop the other cube through the portal. The other turret should then be knocked over.
- Enter the portal and take the cube you've just dropped.
- Crouch and slowly go towards the turret shooting at you until you knock it over.
- Proceed to take out the other turret aswell.
- Go to the door on the far-left. Quickly fire a portal on the ceiling above the turret facing you (there is an X).
- Shoot the other portal on the floor and drop a cube through the portal. Now the turret should be knocked over.
- Look through the door again and then place a portal under the turret near the door. The turret should end up deactivating.
- Fire a portal on the wall next to the last remaining turret. Make sure that the portal on the wall is behind the turret.
- Go through the portal and knock over the turret.
- Take a cube and place it on the button. Then shoot a portal through the opened door on wall behind the turret. Go through the portal.
- Knock over the turret in front of you and then put the portal on the wall next to the turret, so the turret won't see you when you go through.
- Go through the portal and pick up/knock over the last turret. Then proceed to the Chamberlock.
Alternative Solutions
- Most turrets can be approached safely and pushed over with the help of a Cube, rather than disabled through the use of portals.
Video walkthrough
Music
Main article: Portal soundtrack
No Cake For You by Valve Studio Orchestra [4:05] | 
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Gallery
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