Fantastic game! Simple, yet effective artstyle, deep mechanics with plenty of variety, and a progression system that encourages replay. There are elements that remind of Vampire Survivors in a great way!
I did have a bit of feedback though. First of all, I needed to change my page zoom to 150% before I was able to fully see the UX. Secondly, I had a lot of issues controlling the character with the recoil, especially with the fighter, as the slow movement was impossible to course correct from the recoil, so I ended up just drifting in the direction opposite of where I shot, making it difficult to grab experience. And while the characters are really unique and add a ton of variety, I think they need to be balanced a little better. I couldn't get very far at all with the Wizard, but had a great time with the Artificer (especially as it did not have the recoil issues).
But overall, this is a fantastic game that I would love to play more of. Great work!