Game SAS: Zombie Assault 2 online

In a city that was recently attacked by a zombie, send a soldier who fought in the past with the plague, and he knows his stuff, but when he gets here, he realizes that everything is running very, virtually no protection, and the very large crowds of zombies are attacking the fast, he manages to make barricades that would hold at least a little zombie! But when the barricades still falling, it remains only one way to fall back on a long barricade. What would it be easier to fight his government is ready to arm only remains to make it and survive!