BraveSirRobin
Explorer
I think the best strategy is going to be to lead the current zombie hoard into the barn. I'm pretty sure that zombies can't climb ladders, so who ever leads them in just climbs up to the loft. Once the zombies are all pilled in, the others close up the doors and those in the loft escape out the loft doors. Thereafter pick off zombies from the loft with spears at your leisure.