Background story:
I've been playing with WalkerSim mod to boost the amount of zombies, I'm playing solo and I was on a quest, clearing and grabbing package from that big "HIGASHI PHARMACEUTICAL" building on the right side of the screen below. The quest involved killing 100 zombies inside of the building, all kinds of nasty stuff including lots of ferals and radiated zombies were there. When I finally made it to the top and thought that everything is going to be ok and all silent now, then another horde of ferals, radiated zombies, dogs and vultures showed up on the roof, all trying to kill me, I was running like crazy all around the roof with a steel axe in my hands, trying to evade every attack on the small, but complexly designed...