Portal: Prelude Test Chamber 19
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Test Chamber 19
level_07.bsp 
This is the final Test Chamber and the twentieth level of the game. It introduces the player to the Emergency Intelligence Incinerator as well as supervision areas.
Hazards
Walkthrough
- Grab the Weighted Companion Cube and go downstairs. Place a portal on the white wall under the stairs, then enter in the main room with the Companion Cube.
- Put the other portal on the floor and pass through it wihtout taking the Companion Cube. Open the door to the left, move forward and turn left.
- Now, turn left again if you didn't carry the Companion Cube from the Test Chamber 18. Otherwise, pass through the door facing you.
- Turn right, move forvard, open the door, turn right, turn left, go straight, open the door, go upstairs, turn left, open the door, turn right and press the Switch.
- Place the first portal near you to go back directly in the main room. Fire a portal on the motionless angled panel and the other on the floor.
- Start your Infinite Jump. Jump through the portal and, just before touching the ground, place the same portal as the previous under you.
- Repeat this process in to gain height. When you can see the white floor on the ledge in front of the door, shoot a portal onto.
- To finish
Video walkthough
- To do
See also
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