The graveyard had been conquered by zombies and now you're the last hero from your own town who can confront them. You will bounce until you hit one and are fully armed with a firearm with rubber bullets which will help you to kill all the zombies because you are able to shoot into the game with the bullets. In this manner it is possible to kill the creatures which are pospositioned in places where you can't reach. Try and kill all the zombies and advance in amounts that are new!
You need to use your mouse to aim and to shoot until you kill the zombies.