04-30-2011, 06:46 PM
levels will remain the same yes, I don't know if you've played Portal 1, but you spent the main part of the game doing the normal testchambers, and then finally spent the second part trying to escape from the facility. Because Portal 1 was only about 2 hours long, this worked quite well, but because Portal 2 is much longer than that, it could get farily boring to be doing testchambers for 3 hours straight. Instead, they mixed it with doing a bunch of testchambers, followed by mainly walking around, withh less puzzling.