Pretty decent! 9 coins, 21:02.36. Most of that was trying to figure out how to consistently wall jump and get back on the one block ledges without using dash. Still.... not 100% on that technique, and while I'm not totally sure, I think it's required to get the last coin when going above the triple dash coin..? Unclear.
A "reset section" button would be really good. I had to forfeit a few runs due to getting stuck on blocks, and being unable to reset to the start of that section. (Ideally, that wouldn't happen, either, but I get the sometimes collisions mess up)
For the truly hardcore stat hunters (not me, lol) a death count might be nice at the end.