Well, I've played your game at last, but before you will read that comment, be aware that I've literally never played Castlevania before, so I'm for sure not your target. Or at least that's how I felt while playing.
Part 1:
- First thing - game feels solid. Not buggy, not clunky, mostly everything seems to be working, how it should be.
- Difficulty is a bit unbalanced for me (maybe because I didn't knew mechanics already, when I started playing?). At first it was super easy, like "come on, jump over here, kill that guy, you are the best". Then first boss happened to be. He was tough, just like boss should be, but as a newbie player I felt like I wasn't prepared. Every other enemy before was super easy to dodge/kill, when boss suddenly was super fast in comparison (it was ok, but sudden rush without warning felt a bit cheap).