Halo 4′s Mantis mechs look pretty badass; see the agile walkers in action in the footage through the break. The map formerly known as Valhalla, Ragnarok was featured in screenshots leaked from a Halo 4 event last week.Although this footage looks pretty official – it’s watermarked – it also seems to be a leak, so get on it quick.Halo 4 launches in early November, exclusively for Xbox 360. http://www.youtube.com/watch?v=Kg-gspVSjak&feature=player_embedded
