Once through, the player directing the laser will need to set it at the left switch and then head for the portal above the first platform. Once the platform is high enough, hop onto it and then the other player will need to use the laser on the right side switch to raise the next set of spikes. This chamber requires one player to direct the laser at three switches to allow the other player to progress through.First hit the left side switch to raise the spikes while the other player places portals above the two platforms on the center wall.When at the first portal, the other player then needs to raise the second platform while the other player sits in between portals. When the player inside the enclosure grabs the lens cube, they can then drop their other portal to exit.Once out, place the lens cube under the laser and direct it at the wall in front.Place a portal on that wall and one up behind and you will be able to move on to the next chamber. The second part is a bit trickier as you first need have one player lower the wall and the other use the laser to take out the turrets.When they are clear, use the 4 portals- 2 in front, one behind and one on the right side wall- to direct the laser to the receptacle to lower the stairs.įor this chamber, one player will need to leave a portal at the entrance room and then enter the glass enclosure.The other then will need to use the buttons on the floor to lift and lower the blocks inside without crushing the other player. For the first part of this chamber, both players need to set up two portals to allow the lens cube to direct the laser through to exit opening.
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