The music is honestly the best I've heard in the entire jam. ( nuff said there....)
The game's pixel art as well is actually very good. You've also taken the theme "only one " to the extreme. No qualms there XD XD.
However......I felt that the black rectangles were moving a little too fast or a little too slow in some places and that it was sometimes impossible to even get to dash. I suppose it's all part of the difficulty though.....