Hrmm, a bit mixed on this one!
First impression of the game was great, as I loved seeing the really cool title and map screen among other nice little touches that take some good effort to put in where other devs would skip. In general the graphics seemed very well-done and added so much to the atmosphere, and the gameplay itself was delivering some solid Castlevania-esque fun with interesting levels, enemies, obstacles, and solid boss fight patterns.
However, as the game went on, the first impression kinda fell off due to several factors that felt unpolished. It's difficult to nail down what exactly contributes to it, but in general the gameplay felt a bit off and unsatisfying: at first I thought it was just the fact that I was playing with keyboard, but even when I switched to controller, which I felt helped, it still just felt very awkward. For example, it felt really annoying to get used to the delayed attacks despite Castlevania having similar delayed attacks which felt alright: not sure what the difference was, maybe it's because of the jump acting differently or the attacks lacking impact and feedback, especially in the audio department. Speaking of audio, I felt like the music really took a downwards dive in quality on the second level (the second level also felt like it kicked up the difficulty way too high way too fast, what with all of the instant death pits and enemies perfectly positioned to shove you into them).
Moving on from the general feel, there were also just a lot of weird bugs. For example, there's a certain checkpoint that you respawn at on level 2 where you will spawn right on top of enemies and immediately and unavoidably take damage: having that happen really diminished my faith in the game's design as I couldn't believe something like that could be overlooked, and therefore really killed my motivation to keep going on (for if a bug like that was missed, what else might have been missed?)
I think it still delivers a decent experience, but it was very close to feeling like a bit of a style over substance thing: the game looks good, but doesn't exactly feel good to play. Definitely has a lot of potential though, just needs a bit of polish in my opinion.