There is a quest in the junk yard called Tango & Cash where you are supposed to try and break the record at mob killing the two dogs have. The first step says to go to the barriers and prepare. I have spent over an hour now walking around the area. I know where the barriers are but the quest never progresses. I thought maybe the quest It takes two to Tango was holding it up some how so I went and did that one, but still no luck.. The 'Regular' attacks do not appear to be that regular.
What am I doing wrong?