Lol I think you'd learn really fast that a running fight will leave most of those accounts lost and standing there as free kills to an enemy team
Characters that are pathfinding are easy to identify and then sync upon for well-trained PvP'ers. Hit and run tactics would dwindle the numbers quickly and then it'd just be a normal fight with normal numbers... Multi-clienting is useful for laying a trap for someone that is not expecting it, though. I remember gating in the KoS crew hidden in that exact building in Bucs and laying a trap for the "bad guys". It went quite well.
Challenge? Its a combine of archer bots. You have officially graduated to "All Kill" skill, lamesauce.