You should fall down onto the slighlty lower bridge, and round the corner. Use a portal to create a new lower bridge on the left. Go through the portal to follow it, and stop at the corner. Cross back to the first side, and fire one portal on the left side to create a bridge into the gap by the dispenser. This will make the dispenser start dropping cubes into the water on your left. Put one blue portal at the end of the light bridge, (and then use orange portals for everything else), and put another one across from you to bridge the room and hit the button. It’s time to play with these natural light bridges. Drop the cube on the button and open up the exit. Grab the cube and drop back to the bottom and use the springs to reach the end of the course. Use a second portal to power up the second receiver and lower the glass. Bounce up to the platform and drop the cube. Grab the cube and drop down to the first spring again. Redirect the beam onto the white wall, and put one portal there to catch it. Drop down back to the first level, and swap out the redirection cube for the cube. Just wait until it bounces up to you, and grab the cube. Hit the terminal to drop a redirection cube. Drop the cube in front of the receiver to lower the glass.ĭrop down to the first spring, except this time you’ll hit the second one on the wall and get stuck on the higher platform. Use portals to get back across, and then use the spring to fling yourself into the glass. Use a portal at the bottom of the pit, and a portal on the wall across from the cube to fling across and grab it. From this angle, you can use portals on both sides of the raised wall to get it on the receiver again and open the exit. Put a portal on this third platform (next to the raised wall) and repeat the aerial plate again to launch over to the raised section by the exit. Use two portals to power up a new slanted platform that will take you to the exit.

Grab it and use it to point the laser at the white wall in the center. Repeat the fling trick using the other slanted platform to throw yourself into the new area with the cube. Push the button to drop a redirection cube. Run back and use the aerial plate to send you into the ceiling again and fling you over to the button. Keep track of which portal is where though, since you’ll be moving around a lot. Put one portal on the slanted plate across from the button. Put one above the section, and then catapult through the portal onto the raised section.

Put one on the ceiling on the target, and then walk over to the edge and look above the metal edge of the raised portion of the room. After a few failed attempts, GLaDOS will lower the ceiling over the spring.

Portal 2 walkthrough