Dude, this is fantastic. The menu looks professional, the graphics, while simple, work really well. The gameplay is really balanced (for the most part). The gameplay loop is simple but honestly I found it fun. The little breaks in the maze for the zoom in parts or whatever you call them are well spaced out. Overall man this is really great, you've got some great ideas and the ability to implement them. The small details go a long way.
In the spirit of criticism, I do wanna point out some small things that I think could be improved on. First and foremost, it's a bit disorienting. The look around sensitivity was super high on load in, I had to turn my mouse sensitivity to the lowest it could go to make it playable, and even then it was fairly dizzying.
Also at one point I died because one of the red guys spawned immediately in front of me and I had no time to react. Being sent back to the beginning is definitely a bit punishing, especially when there are 24 pages to find (I'll never know what's behind that button on the menu :c). Maybe having checkpoints at each page you pick up would be nice. I do like that it saves how many pages you've picked up even after quitting the game, but given you have to start from the beginning, it doesn't mean much.
But honestly, those are my only issues. The sfx and visual effects were awesome and make the whole experience feel polished.