Nice little game! I have a few suggestions. While it's really not that big of an issue, I think moving the player's health to a separate UI might look cleaner, having it constantly spin around the player can get a little distracting and block the view of enemies occasionally. I also think the controls are a little slidey at the beginning, as more weight is added it's get's much easier to control. I'm not sure if that was intentional, but it was more frustrating than it was challenging. I also felt as if the shop upgrades largely didn't make a difference, and it didn't matter which choice you made, they ultimately had the same effect so the making a decision didn't really feel meaningful.
But other than that, simple and cute visuals! Nice work :)