Black ops 2 mob of the dead Easter egg

To do this Easter egg  you need some one to be weasel he is the guy you need to kill at the end.

So first you need to get all the parts for the plane and go on the plane 3 times to get the first part done. the next part you need to go in after like at the spiral staircase and shock in 872B/101A/481B/386A . The next step is to get the head phones around the prison then you get. Then you get after life and go on the plane and fight weasel.