I had no idea what to do in the first room until I read a comment here. It isn't very clear that you need to flip all the walls to get the door to open (although now that I know that, it's really clever).
Theh big annoyance, which I don't think you can fix because it's a PTI map, is that if you die, you have to start all over again. It's really bad if it happens on the last room (which happened to me, so I just noclipped through the doors to save some time).

Other than that, it's a nice little map. Most of the puzzles were pretty straightforward but it was the right level of difficulty.

Fantasic map! I really liked the last room with the speed gel.

I think there is too much going on in the first room though. I think if you removed the glass near the lasers, it would put more ephisis on the panels, which you need to look at. I'm not really sure how you could make it less confronting at the start, bar making a simple intro puzzle at the start of the map that explains the panels (2 cubes 3 panels 3 buttons), with a touch more white.

I would very much like you to check out my maps if you would. I will be subscribing to your maps now

great map bro! (allthough i noclipped to see what buttons i had to press for the first door, then i saw that you had to have the 3 flip panels flipped to open it)