At first the portrait filtered me, I was about not to play it. But as a platformer fan, this game is tight. It was super easy to pick up, it feels very good to traverse obstacles and it was pretty fun.
I started dashing against the ground at the beginning. I only found out about how useful walls are for gaining vertical height at the very end, where you have to use it to get enough speed (I just noticed that you updated the game, but I played an earlier version).
But yeah, pretty cool, I'm looking forward to playing this again on new updates. Also, I would totally buy something that played like this if the presentation and the length were reasonable.
Edit: Wow, I played it again and I realized something trying to climb up top on the first level: How much the character is spinning affects your jump's trajectory! I didn't notice at all... There's a surprising amount of depth in movement already even with just moving and a dash.