You've definitely got something special here. The environments are really well done, especially the pool. I think the mall might need a little bit more love though. It just seemed a little underwhelming compared to the wonderful opening segment of the area with the gumballs as well as undercooked compared to the pool.
As for gameplay I'd say I really quite disliked the prompts to press q. They tell you things that you should be able to intuit as long as you have room temperature IQ. It kind of ruins the cool experience to have the game tell you you should feel uncomfortable. Don't say we're uncomfortable, MAKE us uncomfortable. In my opinion they could be gutted and the game would be better off for it. Just to note, the game is good at making me uncomfortable, it's just the text takes me out of it.
The puzzles were pretty meh and very infrequent. It makes me why they were included at all. Definitely don't have them just to tick off a check on the "puzzle game" box. More difficult puzzles and more variety would be welcome.
Whatever that shadow thing is, probably make that more of a threat. It doesn't really do anything. Maybe a chase or two could fit in. Then again I don't really know if it was meant to be a villain per se. Depending on how the story goes perhaps it being a threat isn't necessary. The bathroom segment had me panicking without even having it chase me, so there's something there. Definitely spooked me, although the static model did seem a bit silly.
Audio was mostly great. The voice acting in the beginning sounds like a natural and organic conversation. The flowing water and the hums of electricity become unnerving the farther you get into the pool segment. The music in the mall is such a great fit, catchy. My one problem with the audio was the footsteps. Very annoying, especially in the quieter areas. Squelch squelch squelch. Footsteps aren't that loud is all. The fact that the footsteps are the same for every material stands out too.
All of my critiques could be taken less seriously seeing as this is an early beta, I'm sure it'll be more polished later, I just don't know what will be polished and what won't. Overall I'm very excited to see where this goes, and I think playing your game was a nice way to spend an hour.