Chapter 1 - Test Chamber 05
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Chapter 1 - Test Chamber 05
sp_a1_intro5.bsp 
This is the fifth level in the game and, like the other early levels, is set within a dilapidated Test Chamber. It introduces the player to some of the basic principles behind Portal physics, namely the way in which speed and momentum can be used in combination with Portals. Panels are also introduced in this level, and are are activated through the use of Buttons. Finally, the first environmental hazard, Toxic Water, is introduced in order to add a consequence for failure.
Hazards
- Toxic Water
Walkthrough
- Fire a portal at the ground and pass through it in order to bypass the broken wall.
- Place a portal beneath the Vital Apparatus Vent to the far right of the room, then press the button below the orange portal to release a Weighted Storage Cube
- Place the newly acquired cube onto the Heavy Duty Super-Colliding Super Button to activate the panel-based staircase to the left; ascend these stairs to reach two buttons.
- The button to the left controls an apparatus vent, the button to the right controls a large panel which will rotate 90° clockwise. Press the left button first and then place a portal on the platform below the vent. The button to the right should then be pressed as the cube is leaving the vent in order to halt the cube after it has passed through the portal.
- Bring this cube up to the second Button in order to open the door to the Chamberlock.
Video walkthrough
Music
Main article: Portal 2 soundtrack
Haunted Panels by Aperture Science Psychoacoustics Laboratory [1:36] | 
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Gallery
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