The first zombie kill!
Kill more than 50 zombies
Kill more than 10 zombies
Kill more than 100 zombies
Kill more than 500 zombies
Kill more than 5000 zombies
Kill more than 1000 zombies
More than 10,000 zombies
More than 50,000 zombies
More than 500,000 zombies!
More than 100,000 zombies
More than 1 million zombies
More than 5 million zombies
More than 50 million zombies
Kill more than 10 million zombies
More than 100 million zombies
More than 500 million zombies
More than 5 billion zombies
More than 1 billion zombies
More than 10 billion zombies
Kill more than 50 billion zombies
Zombie 100 billion people kill challenge success!