I love the platformer twist on the Vampire Survivors formula! I think the game would get a lot more attention with a browser version.
A few notes: the music stops playing at some point, and difficulty stops ramping up after ~10 minutes (like in Vampire Survivors), which makes the later game feel too easy.
Also, some upgrade descriptions like "more attack speed but less damage" don't specify the actual trade-off — something like "+20% attack speed, -10% damage" would be much clearer.