Control a man who was infected by a zombie - but he only transformed half way. This infection has given him the ability to herd zombies, however it has also given him a lust for blood.
Herd the zombies into the survivors to exterminate them.
Remember, there is strength in numbers...
WASD to move
SHIFT to run
You win if... you convert all the Survivors into Zombies
You loose if... all the zombies die or the survivors escape.