This game is great! I love how the upgrades make you do more damage but also put you at a greater risk. A couple of suggestions for polish would be to add a glitch effect to the screen when you dash to give it more impact, maybe add an option to skip upgrades (that you cant use more than once in a row) to make the choices more interesting, and to make enemies drop a larger quantity of less valuable xp particles (which add up to the same amount as they do now) rather than big ones since people have monkey brains and like when theres more of something. Great job overall!