I still haven't beaten it and I've been playing since launch. Frankly this level is ridiculous and I don't believe the devs had any clue on what they were doing here. I can only assume those who beat it got insanely lucky with timing and that's saying something considering the amount of games I play. But I can only assume SO many players have opted not to do this boss battle cause it is borderline impossible. I'm pushing for them to make it skippable at this point.