Zombie Defense

It is a pleasant morning in your pleasant countryside house and you are in a horrifying zombie apocalypse. Your dear mother, bless her heart, has left you with a stockpile of weapons to deal with the encroaching zombies, but she is too elderly to wield them. Do not let her down. Shoot as many zombies as you can for as long as you can. Protect your home with your life from the invading zombies. Survive for as long as you can.