I had a good time with it. You guys did a really great job with the layout of the levels, especially with introducing and expanding on mechanics over time. The puzzles very much reminded me of Portal in a good way, which I think is exactly what you were going for.
If I had to give some feedback, I'd say sometimes you can hold a block that's so big that it blocks the view entirely. Not sure how that can be fixed, but it did make me make some clumsy mistakes here and there haha.
Overall though, I think the concept was really solid. The interpretation of the theme was well done. Nice job! 👏
(I love the ending room too 😂)