The choice of yellow gives it an old handheld vibe!
I like the simplicity of the mechanics and think you got an impressive amount of mileage out of them, although there were maybe a few too many that boiled down to dashing towards the door good enough. I'd compress your levels al little too maybe, especially with the limited vision they felt a little too big with too much empty space.
Stumbling across the spiders for the first time was a great moment, a nice jolt of horror that really shook things up.