Enter elekro right after reset.
Attract every zombie in the town.
As a mass of zombie is chasing you, you get close to another zombie. But the one zombie in the 'herd' will just stop chasing you.
Run around in circles, and watch them hit each other
After the experiment, grab a fire axe and just slaughter all of them in just 30 seconds. (Yes I'm complaining about the zombie difficulty. Please make them spawn more often, and in larger numbers.)