I think Vampire Survivors like games are really hard to get right. That, or, I might tend to be biased against them for some reason if they're a clone of that game or even similar to that game.
Even so, there's something about your specific game that I really liked, so I think you did a really standout job here. Great game! The sounds, visuals and everything is just clean and working well with the theme and the experience.
A very minor detail, and this might be just me, is that the animation in between for upgrades is enjoyable to see a few times. But I wonder if it may be helpful for that to go a bit faster especially when doing things like repeatedly clicking, which maybe should skip right to the 3 upgrade cards immediately to select from. However, it's a very minor detail, and overall, really nice job on this!