Pretty good. I think I detected some heavy metal or just really guitar-heavy rock playing in the background during the 'Gunman' segments, but it was sort of hidden behind the sounds of gunfire. i think that if you played down the gunshots by just a bit and made the music slightly more apparent, it would help add some impact to the moments where Gunman shows up.
That criticism aside, good video. Obviously the punchline of the two segments was the same each time, but that was nothing if not part of the joke. 9/10, good job.