Chapter 8 - Test Chamber 2
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Chapter 8 - Test Chamber 2
sp_a4_tb_trust_drop.bsp Ceiling Button
This is the forty-eighth level of the game, and takes place within an incomplete Aperture Science Test Chamber. This level features the Excursion Funnel as its primary mechanic.
Hazards
- Falling to your death
Walkthrough
- Jump in the Excursion Funnel below and fire a portal on the wall on the left.
- Place a portal at the end of the Funnel, so you may enter through.
- Shoot the portal you placed first on the wall on the left directly facing you. You should stay in the funnel and go along it.
- Put the same portal on the floor below and go on the area on next to it.
- Place the same portal below the cube dispenser and push the Switch.
- Fire the portal on the floor below the cube and take the cube from the funnel.
- Look for the button on the ceiling and put the portal on the floor below it. Put the cube in the Funnel and wait.
- Go in the Chamberlock.
Video walkthrough
Related achievements
 |
Smash TV Break 11 test chamber monitors |
Trivia
- The chamber closely resembles Valve's promotional video Excursion Funnel, with a different style.
Music
Main article: Portal 2 soundtrack
TEST by Aperture Science Psychoacoustics Laboratory [6:14] | 
Download | 
Play
Excursion Funnel by Aperture Science Psychoacoustics Laboratory [4:32] | Download | Play