AI Director 2.0: Advanced technology dubbed В“The AI DirectorВ” drove L4DвЂ™s unique gameplay вЂ“ customizing enemy population, effects, and music, based upon the playersвЂ™ performance.Each of the five new campaigns contains at least one new В“uncommon commonВ” zombies which are exclusive to that campaign. Five expansive campaigns for co-operative, Versus and Survival game modes.Over 20 new weapons & items headlined by over 10 melee weapons вЂ“ axe, chainsaw, frying pan, baseball bat вЂ“ allow you to get up close with the zombies.Next generation co-op action gaming from the makers of Half-Life, Portal, Team Fortress and Counter-Strike.L4D2 promises a satisfying and uniquely challenging experience every time the game is played, custom-fitted to your style of play. This improved Director has the ability to procedurally change the weather youвЂ™ll fight through and the pathways youвЂ™ll take, in addition to tailoring the enemy population, effects, and sounds to match your performance. Helping to take L4DвЂ™s frantic, action-packed gameplay to the next level is AI Director 2.0. YouвЂ™ll also encounter five new В“uncommonВ” common infected, including the terrifying Mudmen. YouвЂ™ll be putting these weapons to the test against (or playing as in Versus) three horrific and formidable new Special Infected. In addition to firearms, youвЂ™ll also get a chance to take out some aggression on infected with a variety of carnage-creating melee weapons, from chainsaws to axes and even the deadly frying pan. YouвЂ™ll play as one of four new survivors armed with a wide and devastating array of classic and upgraded weapons. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns. Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008.

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