I know that the zombie theme, perhaps, has already become boring and tired of many. However, I think you should play this mission. In general, the zombie apocalypse began, it is not clear because of what (whether a virus, or ecology). Grove Street was the first to be infected. There is real chaos. Everywhere wrecked cars, a bunch of corpses, torn off body parts, debris. Many began to board up their houses. Someone drove in here in a truck with a tanker that could explode at any moment. You are just an ordinary guy living here. You will have to save your life with all your might. But you won't be alone. Many people took to the streets and began to fight off the zombies. Someone set up barricades, several people climbed onto the roofs and fired from there. Even Swat arrived, who was immediately attacked by the walking dead. During the mission you will naturally fight off zombies and seek help. Some people will just drive you away, someone will plant weapons. Have to be together with someone And now about the zombies themselves. They are hard to kill, but still they are mortal. In the beginning, you will have to shoot for a long time before they die. When you have a better weapon, it will become easier.
P.S. Take a gun from the closet before you go outside, it will be much easier for you.