This is really well done! The music, mechanics, artstyle all fit together nicely. The trails shown when rewinding time are an amazing addition without which it could become too frustrating. The only thing I could complain about is that I would prefer the movement to be snappier (now it takes him a moment to stop after letting go of the key, and it's easy to fail to jump from a platform when running) but it's really minor.
Great job!
PS: I appreciate the good use of 2d lights :)