The smash coop zombie survival shooter of 2008 will be a spawning a sequel and it promises to be just as badass or perhaps even better than the first. What made the first a complete success was the AI Director. This piece of software directs the “zombie movie” that you’re in. It will increase zombie population and control their spawns. On the upcoming title, Left 4 Dead 2, AI Director 2.0 will control much more than that. It will put obstructions to prevent you from moving somewhere, making you look for alternate routes. It will also control the weather. Oh yeah, we now have frying pans, baseball bats, hacksaws and oh yeah… CHAINSAWS! Release date is on November 17, 2009.