Okay so I already commented below, but I didn't grasp all the genius of your game, so here is my real review! Thanks for helping me understand a bit better ^^.
First, my point about the graphics is still relevant. The game is beautiful, the little post-process effects adds an amazing touch, the pixel art is awesome, everything is clear. You guys did a great job ^^. The side doors are a bit hard to see, but once you get the hang of it, it's okay. And the see-through walls are a really nice touch! So, art team, GG, that was amazing =)!
The music is also very good, I especially like the music in the last level. It perfectly sets the mood for what is to come, that's just spot-on. The sound design is also nice, you implemented a lot of sounds to give the player audio cues about what is happening and good feedback from its actions. Audio team, GG, you rock!
Now the concept, holy shit, that is genius. At first, I was like "meh, a generic top-down where they visually replaced the buttons by doors, how lazy is that", but when I understood that you needed to close all doors, and so to keep track of what was behind the doors, that just felt amazing. As I mentionned, a little indicator or tutorial would have been nice, even just a simple 2-rooms level where you have to close the door to continue, just to introduce the mechanic, would have been perfect. But for a 7 days game jam, you gave us like 5-6 levels (I didn't count) of awesome and interesting puzzling, two cutscenes and even a F-ING BOSS FIGHT, so it would be really unfair from me to complain about the content (and about something that, in retrospect, made enough sense to find once you gave me a hint about your main game mechanic, so it perfectly fine). Game-design and level-design team, GG, you nailed it!
Opening/closing downwards doors feels a little bit odd, the hitbox seems to be higher than the visuals, but the rest of the controls are really good. I would have prefered if the little "E" indicator was here all the time, instead of just at the beginning, that would have helped ^^. The movement is precise and I didn't encounter any concerning bugs or whatsoever. It was a bit odd to be able to go through the decoration, but it's better than cluterring the rooms with useless obstacles, so it's fine. Coding team, GG you are awesome!
So, yeah... What can I say? I'm so glad I gave a second try to that game, because holy shit, I would have missed an awesome moment. You guys have absolutely nailed that theme, congratulations, you can be proud of you!