I'm not even gonna bother because for some reason I know that he will just push the ones up front and get to you either way. If someone can prove this work then tell me.If not then check out how to take it down normally on my guide for FIVE.
Not really that hard.Whoevers getting chased run run and run and everyone shoots him but the player running.
all you really need to do is
go to the basement( the room with the map and red shit on the bottom)
go on the cat walk ( the little walkway surround the place with the red shit)
run around it with your buddies and keep shotting him in the face and torso area.
this is a great strategie to get rid of him in the first round he comes
+rep for the good answer