Congrats on your first game! A bit short but it's a solid start. It definitely gives off an unsettling vibe given there's no background music. This however, can be a bit tricky to balance out since players will be much more aware of other basic sounds you would ignore in other games, in this situation, I felt the footsteps being a bit loud and the rhytm of them becoming repetitive.
The ending left me a bit confused but I'm glad I found the README txt file afterwards. You got the vision and there's definitely room to improve. For the next game I would personally keep things a bit more simpler, like reducing the camera lens effects / VHS filters, adding a much more flexible settings menu with resolution, toggling camera bob, vsync and whatnot, and I'd try to make a story that would be easier to understand at a glance. Sometimes an idea feels super clear in your head, but when you try turning it into a 3d horror game, you'll be surprised by how different it can turn out; this happens a lot in the creative works.
Looking forward your next game! Keep it up ❤️