Middle of Nowhere

You and your friends were in a great time in nowhere with your turism group, why? Zombies were coming, lots of them, and you knew it, you have guns, but and the other people? Goodly, some of them knew it and they had it too, but hell is on earth, so aiming is not good with panic. Your escaping chance failed when all the civilians started running and screaming. You don't know what is going on, who is dead and who is alive, SO KILL EVERYONE.