Cute style, but a bit unwieldy, so it can be hard to advance. Just too easy to take damage. I Don't know what the gold bar does. I was hoping it would be, like a life refill once you go down, since you can't collect once it's full. But that wasn't the case, so I don't know.
If you make a post-jam version, I believe it could be really fun! Maybe a map (even if just for areas you've already been through), and arrows to attack so you can attack up and down and don't need a mouse.