Halo 4 - Infinity Multiplayer Trailer from E3 2012

Originally shown at E3, this new trailer for Halo 4 highlights the multi-faceted multiplayer implementation in this year's Halo 4. There's a lot to it, including an unprecedented amount of (free) DLC content, and numerous competitive and cooperative modes to explore.

Halo 4 is out on November 6th.