I finished it (all A, B, and C sides as well as collecting all normal strawberries) a few days ago.

After 35 hours and almost 10,000 deaths, my verdict is that it's really really good and you guys should definitely try it. Definitely one of the hardest games I've played in some time, but the way it manages to intertwine its core mechanic (the dash) with its story is something usually not explored in a platformer, and combined with how sharp the controls feel I can't recommend it enough.

Also AIME season starts next week; will there be more of my problems for you all to "enjoy"? (oops I know the answer to this but I also don't know which AIME will be given on which day so there will be surprises for me as well!)