More depressing than scary, but the atmosphere comes through. With artsy games it's hard to give feedback. Solid execution, I think I have an idea what you were going for.
My only critique is the color palette—the mainly white tileset and white characters blend together and it's just not good to look at. A few shades of gray would've been welcome. Other than that it's great! It's the type of game smartass youtubers make video essays about.