In conjunction with the Microsoft press conference unveiling, Valve has provided additional Left 4 Dead details. First, the new melee combat options. We saw the chainsaw teased in the trailer, but players will also be able to wield a frying pan, axe, baseball bat, and additional blunt-force objects. Valve has also detailed the new AI Director 2.0, which will not only affect how many of the undead you'll be tackling at any given time, but will also dictate weather effects, world objects, and pathways provided to the players.
Left 4 Dead 2 is scheduled for release on November 17 on Xbox 360 and PC, with new co-op campaigns, Versus campaigns and Survival maps.