Loved every second of this. Amazing tension and atmosphere, a very nice use of low poly without that PSX filter or VHS effect wrecking it, you had me on the edge of my seat the whole time.
Only real feedback I have: at a certain point, I clipped through a door underground and fell through the world; easy fix with hitboxes. As well, the flashlight might benefit from a little widening. That, or maybe giving the light some reflection/glow around the edges to help. It's pretty dark otherwise.
Can't wait to see what you do next, you have a real knack for horror games. 9.5/10, you've earned it!