Hi!
I liked your prototype, it felt very smooth the controls and the movement. I played a ton of Vampire Survivors so I can't help to compare it to that and I think for a prototype its looking really well with the different options. My only feedback would be to differentiate the colorschemes a bit better. Since player/enemies are both grey. But nice, excited to see!
I also just posted a prototype of my own and would really help out if you'd check it out too =)
Have a nice day and goodluck on your journey.