A lot of fun, second boss took a few attempts, but I admire the fact it was hard without being stupid and ridiculous. My only complaint, which I won't knock you for it the stiff controls, preforming an action right after another often didn't work, even if the command was as simple as turning around after you land. Still though, I think if the controls were as responsive as I would've liked, the second boss would've been just a tad too easy then, hence why I still feel the need to give this a 5/5 rating.
I'd love it if you made another game with this Castlevania style and bosses with these kinds of move-sets and difficulty.