So, I have been playing around with some custom made maps in Portal 2, and thought I would share some of the more fun/challenging ones.
9/10
All in one:
http://forums.thinkingwithportals.com/downloads.php?view=detail&df_id=1703
This map is 10 puzzles that take place in one room. It is amazing that they made the single room transform to make these. The goal is to simply press a button that never moves. Each time you do, the map changes to make it harder to reach.
10/10
Chander Test 8 (Angry Conductor) ver.3
http://forums.thinkingwithportals.com/downloads.php?view=detail&df_id=1707
This is one of the hardest I have come across. To solve it, you must do things differently than any other puzzle I have seen. Warning, I was unable to solve the second puzzle legitly. The map had been updated to prevent the solutions found in the thread. Good luck!
6/10
Photonic
http://forums.thinkingwithportals.com/downloads.php?view=detail&df_id=1826
This one, I made much harder than it needed to be. Not that hard once you figure it out.
10/10
Companion
http://forums.thinkingwithportals.com/downloads.php?view=detail&df_id=1926
This one is great. I sat in this one of over 20 minutes baffled. I found out that I had broken the test through the use of a portal skip that should not have been done. Oops. I could have, and did, solve it with the glitch once I realized I needed the laser cube. Try doing this one the right way.
Hint, you need bounce gel ON the companion before it will go to the other side of the map. Apply it while it falls from the spawn point.
9/10
Last one: Memory Loss
http://forums.thinkingwithportals.com/downloads.php?view=detail&df_id=1779
This one is cool cause it has a pretty big secret area and items to collect. Don’t even try for the companion cube and potato on it at first.