343 Industries and Microsoft have put together a video showing off the Promethean Weapons for the upcoming FPS Halo 4. You'll not only get a look at the new Halo 4 guns in action, but you'll also get a peek at how you'll be able to use them strategically. Also: Dubstep. There's got to be dubstep.
Halo 4 will be released on November 6, 2012.