Hey there! Super fun. It's very Vampire Survivor but Platformerized. I love it. Castlevania-esque.
I did run into a bug or two.
For starters, after a really long run in the castle, surviving to rack up over 1000 coin, I died, bought some upgrades, then tried to re-enter the castle, and ended up falling, forever. Never actually arrived back at the castle.
The second bug was with the skeletons. When jumping from a lower platform, they will spawn at the very edge, pretty much exactly where I can land. It became the only real thing that I took damage from after a while. I even tried to dodge away when I realize they're spawning where I'm going to land, and try to go back down but then they spawned there too. If only I were the god of thunder.
I can't wait to see updates! Looking forward to playing more.