The game is a bit bright.
I like the retro art style a lot.
The doors were confusing, I just pressed them all until I found the right one.
The text disappeared kind of quickly; tho that's more of a nitpick.
When the lights went out in the basement I was expecting a cutscene then accidentally left clicked and realized I was fighting something. Only being able to see things with the flash of my gun is a cool idea, but with such little ammo its not so nice.
You packaged your game in the development configuration and as such I could see your printed debug messages and a "reflection capture must be rebuilt" info message. If you built it in the shipping configuration all of that would have been hiden.
Overall the beginning was a neat experience but the end fell a little short.