Pretty good- the graphics are actually quite nice, both bosses are pretty fun even if they're specific, I liked the integration of body horror with the power ups, the contrast between the gun and the eldritch magic is interesting, and I'm interested in the story.

One star is taken off because as you said, it's a demo missing a lot of features (most important is a map- while feeling lost in a scary situation can heighten your fear at certain points I just felt like I had no idea what the fuck I was doing or where I was supposed to go or what I was missing). Moreover, certain things just felt clunky likely due to the early stage- The lack of a sprint or dash is noticeable, stopping when shooting is clearly intended to feel awkward but I feel like a reload mechanic/ammo would have added more, and repeated walljumps on the same wall feel weird.