The Pied Fisherman of Hamelin

Your task is to lead all the zombies out of the city to the brain flower. They are hiding inside canals and will come out if they smell brains. Zombies are mostly interested only in fresh brains but will attack anything that blocks their way. Clear out barricades with zombies, but be careful because they arent immortal. Also try not to wreck the city too much on your way out. Throw and pull brain by holding mouse1 and aim with mouse. Move with WASD and rotate camera with Q and E.