forget yes, beat it for the first time. I'm not sure if it counts though, because I'd started on the "High Brow" challenge mode. Either way, the boss battle was great. A randomizer in the first or second level gave me a laser, and I played "The Magician (I)" right before the final boss. I just had to hold down an arrow key and every shot connected to everything. It was great.
EDIT: On further inspection, the run didn't count :c