This is a Halo: Reach Pit Team Slayer gameplay from MLG pro Heinz. In this gameplay, Heinz pretty much dominates with the sniper rifle for the entire game, picking up a multitude of headshots, including a nice under-pressure quickscope at 1:28 and a sweet through-the-crack headshot at 5:11 to take out the enemy sniper. Enjoy!
(21-0 in Pit Team Slayer With a Sharpshooter)
Source: FBWalshyFTW