Very, very well done. The lighting, the visuals, the models are all clean, simple, and well done. I like the concept, and the execution is also very good. My one complaint, however, is a large one. Every time you have to start over, you have to wait. Waiting for that voiceover makes doing repeat tries an absolute chore, and the platforming puzzle with the lights is so sensitive that I kept restarting over and over again, every single time I had to restart is another 30 seconds wasted. If you make that first door open by default, this game is a gem. Loved it.
(BTW if anyone else is playing this game and wants a workaround for this issue of waiting, hop on the chair before the door, then crouch jump onto the lip of the doorframe. You can clip through the bit of wall between the door and the roof and bypass all the doors until the lazer room. Speedrunning tip)