If this undead zombie hunting match had been set ten years earlier, it would have simply been you, your kid, a shotgun, and a clueless deer. In any case, a lot has happened since the fall of humanity, and now the lonely kind of chasing you do involves smelly, pale, brain-eating zombies. They wouldn't kick the bucket (as far as possible anyway) on the first pass, so why not "convince" them with a touch of hot lead influence? Each level in this game is a day of endurance that accompanies a goal. Load up, kill the zombies, complete the objective and you could very well come around.