The puzzles are really interesting, and the low poly assets look really matching with each other. For my gameplay experience, I am quite confused about what is the goal of the game at the beginning, and then I gradually realized I was doing what the title said with more and more clues shown after each puzzle was solved. It is really amazing since this kind of setting and storytelling makes me experience like I am actually in the game itself, and creates a mind flow that keeps me playing it and thinking about what might be revealed or happens next.
A little suggestion would be to make some route tracing, for example, the glowing effect that led you to the next room, or just make the content in the room some sort of random(any first room that I enter would be the first puzzle). The reason I suggest this is because, I waste about 5 mins to find the room that I can enter since certain doors are just locked at first and cannot enter, and the moving speed for the player is a little bit slow.
Overall the game is truly satisfying, and I really like it!