Hmm, it certainly seems like a pretty cool game at first glance, but I found it to be a bit underbaked for me on further examination. Definitely has a lot of potential though.
The game definitely does have some nice stuff going for it: the world seems very interesting, the graphics and animation are pretty cool, and the focus on boss fights is a delight. However, there just seemed to be a lot of jank surrounding this, dragging down the game.
First and foremost, the controls were very odd and annoying to get used to: why not have shooting or rolling be its own button instead of this awkward holding S thingy, hanging is so delayed and unresponsive, why does S not put you in a crouching/ready position for rolling/shooting, etc. Second was that the game just seemed to be constructed very awkwardly and have bad bounding boxes, where I would teleport around or get half stuck in walls for doing basic movements and jumps. just a general sense of everything not being as smooth and polished as it should.
A big disappointment was the fear mechanic, which seemed like it was going to be really cool. I thought it was going to be really neat to have to tactically disengage or look away from the boss, lest I be assaulted by all sorts of crazy hallucinations or status ailments. Instead, the fear meter just seemed to build up all the time even if I looked away, and who cares that it built up because all it did was turn the screen slightly purple: woo, so scary. In the end, it was too annoying and tedious to avoid since there weren't effective tells from the boss, and it didn't add anything cool or interesting to the fights.
Finally, while the boss fights has potential, the levels leading up to them seemed very bland and uninspired. I'll give that the bird level was kind of cool in that it build up anticipation for the boss by previewing it as you work your way up, but all the levels did was just pad time out with the same ol' obstacles.