Amazing atmosphere, art style and sound design. This is the best looking entry I've played so far, insane level of detail and depth to the environments, they really reminded me of the first two Fallout games, but in 3D. Loved the pixel art - if that was all hand drawn it would probably have taken me the majority of the jam period just to put those images together! Sound design was pretty perfect, the distant monster sounds effects every now and then really makes you feel like you're not alone.
Navigation was quite difficult at times, I got lost not realising there was a dark hallway I'd missed. These would be great for hiding easily missable secrets, but a small light source or something to show there's a way through would help to keep the player moving forward.
The inventory system was good too, and having to search the environment for text logs and items was a nice touch.
Awesome and really impressive for such a short development time!