Instead, place an orange portal as high up as possible on the wall. At the beginning, the ceiling is no longer portalable. Numerous changes have been made to make the advanced chamber more difficult. Cube on the button, portal back to platform 4, and through the door! Portal placement, a push of the button, through the portals, grab the cube, and crawl back out of this terrible room. Go ahead and take the cube over to the entrance, but then go yourself back down to the small button. now we have to get out of here with this cube. Unfortunately, you have to get over there first, and so you must create portals to get back, press the button, go through, place a portal on the angled platform as soon as it stops moving, and fall, placing a portal below you. Assessing the situation, the angle will be excellent for a long fling, and the checkered low floor on the water level creates the necessary momentum. Pressing this button, you will notice the entrance panel once again opens up, staying at an angle for a period of time before closing. You cannot jump to the cube, but you can jump to the lower area. You can now take the moving platform over. Then create these as you go, to fling yourself to the cube.
