Zombie Spinball

Zombie decided to take over the planet and with each passing day more and grab the big cities. They even got to the big cities, and there are now infected with the virus to their healthy people. You are not a magician, but can rectify the situation completely, if possess at least some minor agility and dexterity. At your disposal is a ball with spikes, pelted it with the torque shaft in clusters of monsters, destroying them with one blow.