Good concept, needs a little refining.
Good solid concept. I like the graphics and music. The controls need work.
Dash should have been its own button and the jump, for me anyway, was not near as responsive as it should have been. I'd push and the latent response would cause me to mistime the jump falling to my doom. And because of the awkward dash, I'd end up running into the enemies at the wrong time, incurring damage.
If it hadn't been for that I'd have likely really enjoyed this a lot more. Still, you put a lot of effort into the game and it shows. That deserves recognition.