The style is amazing, the intro really grabs you with its visuals alone. The gameplay is easy to pick up, but I think the upgrades are a neat idea. They're like charm system in Hollow Knight where they can radically alter playstyle, it's really cool. Though I wouldn't say it's perfect. Half the time it feels like you get nothing thanks to the weapon you have on you. When it does work though, man does it work. I think having the power-ups be more generalised and less niche would help out a lot.
Really simple and fun game, great job you guys!