Wheatley has yet again found a sealed-off wing of chambers. These are the Portal 1 chambers GLaDOS used before she was killed. He's cleaned them up, and is now going to put you through these oldschool chambers....

Wheatley has done some snooping around and found some old test chambers. He decided to clean them up to modify them and use them as tests for you....

Wheatley has discovered a batch of old, uncleaned chambers that he wants you to try. Your job is to simply finish the puzzles....

The second of Wheatley's reformed tests. To beat this chamber you're gonna have to apply some cleverness....