Thanks for playing! Good feedback. I have a bad habit of leaving the sound effects/music until the last minute for these jams, which I think ended up being pretty evident on this one lol. A lot of the upgrades aren't really balanced, which can trivialize a lot of the game. I don't think this is necessarily a bad thing in this type of game to let the player get overpowered, but it probably should be a lot more rare of an occurrence.
I actually changed the font at the very last minute from what I had been using since, apparently, if certain characters are missing from a font (In my case '+' and '%') then they'll show up as a weird encoding character when ran in the browser (but not in Godot itself, so I didn't notice until actually uploading to itch). There's probably a way to add specific characters to font resources in Godot 4, but I wasn't able to figure it out.