Hi, happy to be your 20th rater! The graphics are really cool, and I especially liked how you put the menu in the game on a computer, but in some levels I could not find it. If you did not put the menu computer in every level, you probably should, so that there are no levels where you don't have access to it.
If you plan on polishing the game after the jam, I'd also recommend adding some kind of tutorial, because I was having a hard time figuring out how to interact and what to interact with. It would also contribute to the Portal vibes. We used a GLADoS AI voiceover in our tutorial, the gameplay is very different, but the atmosphere is similar.
Overall, an innovative and good-looking game, and some little improvements would make it even more fun.