Cute little game and I loved the concept of how you get upgrades! It's definitely a "easy to learn, hard to master" style game and you really have to pick your choices wisely upgrade-wise. I think it would be really really cool if instead of just stat boosts you could have the occasional cool ability unlock from that little menu, something like a revolver instead of a whip or like enemies drop gold on death and so on, making the upgrades feel a bit more meaningful since in any game a stat boost needs to be gotten over and over and over for the player to start feeling the effects. Great great stuff here, amazing job!