Zombie- AP world history Ch.2

I looked to my left then to my right, it was dark all around, except for the light emanating from the flashlight mounted on my gun. I cradled my assault rifle, it was my lifeline, if it was gone, I was dead, or worse... Alive. I heard a shriek, not from a human, but from a zombie...... I looked down the alleyway ahead it was fully dark now, I heard running footsteps behind me. I turned around as fast as I could. A blood covered zombie was running toward me, I was scared for my life. I chopped the zombie down with my rifle, the muzzle flashes lighting up the ally. Suddenly I heard the blood curdling cries of many zombie- oh no, I made to much noise. Now they were pouring in from the street into the alleyway I was in. Around forty of them were coming towards me, I turned around to try to escape.. at least five more in that direction. i sprayed the five zombies down with my gun, pulled the pin on a grenade, dropped it, and sprinted in that direction. I made it onto the street. There were a few zombies here and there on the street. Suddenly I heard an explosion-- the grenade. I looked back down the ally, something started on fire down there, yes, I just bought myself more time. I ran trying to get past the zombies with our shooting (so I wouldn't attract more). The world was a mess, the streets were filled with cars, there were corpses everywhere, buildings deserted. As I was walking past a few corpses, one started to move. I pointed my rifle muzzle on the corpse, it started to crawl towards me, it's lower half was cut off, I'm guessing it was run over by a car, it came very close. I didn't want to waste any of my bullets or attract more of the undead, so I pulled out my machete. I started hacking away, the zombies head was obliterated in a matter of seconds. Suddenly, there was something hard, metallic, hollow, pushed against the back of my head. It was the barrel of a gun. A grisly voice behind me said, " give me all of your supplies and I might