On September 24, 2014, to celebrate the release of Steams Music. On July 1, the second volume of the Soundtrack was released, while the third and last volume released later that year on September 30. There's a floor switch on the top level, but for now you'll have to ignore it. On May 25, 2011, the Portal 2 Team released for free the first volume of the complete Soundtrack, titled Portal 2 Soundtrack: Songs to Test By, on the official Portal 2 blog. Drop down into the orange portal to momentum jump through the portals and across the chasm to the top level of the room. Look down from the edge of the platform you're on now and you should see a platform below you onto which you should place an orange portal. It involves the use of the Emancipation Grill in similar. This test chamber is more extensive, split into four or five different segments, and puts everything the player has learned to the test. To reach the top level of this room, place a blue portal on the wall panel that's jutting out directly overhead. When the test chamber reappears in Portal 2, the portal opens using buttons rather than generating automatically. When you reach the second-to-last level, this technique won't be enough to get you to the final ledge. There are a couple more levels to climb via the same jump technique-just place blue portals on the ceilings that overhang your destination, then drop through an orange portal on the floor to reach the next level. Place the orange portal just a bit below your level, then jump over the gap, into the wall to pass through the portals. The only nearby wall for placing the orange portal is across a small gap. However, be sure that your portal is as far along the left wall as possible (see our screenshots for more clarification). Again, you'll have to fire a blue portal onto the ceiling that overhangs the ledge on the other side of the gap.

Portal test chamber 15