Spent some time out there tonight on my server, the first Pub camper, fell for the PVP flag trick, so we stole his chest for an hour or 2 til he stopped showing up, then found an Imp camping one, had some Pubs ask us to help kill a Force Ghost, and his AOE killed the level 13 camper, good times.
You can beat them, just watch where it spawns, and keep a timer from the second it despawns.