I love the art, it looks great!
But, sorry to say this, why is it not spacebar to jump and something like shift or control to dash? This is a really awkward control scheme for me, I couldn't really do much because I just couldn't control the character really. And I don't think switching my hand from mouse to keyboard is a good way to do this.
I could also move off screen and then there was no way to get back, I needed to restart the game.
I think the idea behind it is good, but it really needs better controls.