Here is my updated solution to the last room https://youtu.be/1TFybqtLf8A

The last chamber, It's meant to be a troll chamber, just like the first. Some test chambers require you to be observant. I can tell that you're observing, but have you checked on what causes the last indicator panel to uncheck?

Nice twist on the 4-portal concept! I'm not good at 4-portal and mono-portal puzzles so It took me a while to wrap my brain around this concept. Dang, that second puzzle had me stuck for a while but was very satisfying to solve! I don't know if I solved the last incorrectly or if it broke, but I couldn't figure out how to open the door with the props I had. Here is my blind playthough, great job with this one! https://youtu.be/8aDdXxSBazM

It's a fantastic map. Before you solve the soft-lock bug, it is better that split this chamber into 5 different map. Anyway, that is great.