Test Chamber 08

rex_08_exchange.bsp Exchange

This Test Chamber is the ninth level of the game. It introduces the player to the upgraded variant of the Handheld Portal Device.

Hazards

Goo
High Energy Pellets
Positron Energy Orb
Cube Hazard

Walkthrough

Once you enter, turn left, then turn left again, then turn right.
Stop at the button, then press the button two times.
Go to the area with the Weighted Storage Cube, then fire a portal in that room.
Take the cube with you and go through the portal.
Fire a portal on the opposite side of the orange portal, then go through the portal and place the cube on the button to open the door.
Go back through the portal, then press the button.
Place a blue portal where the cube is, then go through the portal, and then, take the cube with you, and go through the portal, then place the cube on the button to launch an energy ball.
Place a portal where the energy ball is going to bounce, and once it goes through, quickly go through the Material Emancipation Grill.
Fire a portal onto the wall where the pellet catcher is facing.
Once the pellet catcher catches the pellet, press the button.
Go to the area where the cube is, and place a portal. Then, take the cube with you and place it on the button.
Go back through the portal, then walk toward the pedestal to upgrade your portalgun.
Place a portal on the wall on the opposite side of the chamber, then place another portal in the area with the box dropper.
Go through the portal, then place a blue portal on the wall on the opposite side of the goo, then go through the portal that is still on the wall.
Go through the emancipation grills, then place a portal on the next wall, and place another on the other side of the pit. Go through it.
Proceed into the Chamberlock.

Video Walkthrough