I really loved the spritework and music! The hitboxes can feel a little weird at times and I notice a bit of jitter on the obstacles which may be fixed by adjusting where their position is updated in the game loop code. I also wasn't sure if I was supposed to keep Mint moving at the same pace as me because of the game over screen when she falls too far behind.
But other than the gameplay, the art and music is pretty top notch!