I got through all the levels! The third one was the hardest, getting the dash controls down and keeping the momentum after the wall jump, but I really like how you have a sense of getting better as you play more. I don't think I got any of the time trial medals (except bronze on the second level), but I love how you can feel a sense of progressively getting faster as you play the levels more. For me that culminated in level 5, which I played through without stopping even once on my final go. VERY good feeling.
I think that is the strongest suit of your game, that exciting sense of speed. Levels 2 and 5 were my favorites because they felt they got that across the strongest.
The only other thing I would comment on is that I would also prefer some sense of control rebinding, Q didn't work all that well for me, or maybe I just have a twitchy ring finger.
All in all great job, looking forward to see where you take this!