That was pretty fun, but I would have liked to see more than one level. I also had a problem with the dash being a double tap instead of a button. I found myself falling a lot when I was trying to correct my jump and accidentally double-tapped a direction instead. I also would have liked to see the dash be used for something. Like, make a barrier that can only be passed by dashing through it, or have a gap with a ceiling over it so you can't jump it and have to dash over it.
Overall, this was a great entry. Keep it up.