You need to save your own territory from the enemies. The enemies here are nothing but the zombies who will be trying to invade you and take your home. In front of your home, you have a barricade. This will prevent the enemies from entering the home. So, your goal ultimately will be to protect the barricade from them. You will have weapons with you to shoot and kill them. They will be many in numbers and as the game advances; they will come faster towards you. So, you have to play with accuracy as well as speed. But one thing, they will attack in nights only. So, you will have the daylight to do some necessary works. You will have 12 hours of the day to do this. There will be three major things to be done- repairing the barricade, searching for weapons and searching for the survivors. Distribute the hours according to the necessity. But always use most of the times in repairing the barricade. Because, if your barricade is damaged; this will make things easier for your enemies. They will easily destroy that barricade and attack to kill you and take your home.