This is a Halo 3 dualtage from Carnage and Chaos, edited by Atiemark, entitled, "C&C". The gameplay is very good, featuring a ton of really impressive multikills (I really liked the triple on Guardian at the end). The editing is what made the tage for me though. Even though it gets a bit too hectic at times, it showcases some really sweet effects and syncing along with some of the finest 3D work you will ever see in the introduction.