It was never a difficult task for Rhode to find members of the Jade Tears Mercenary Group. He carefully followed the trail left behind by them. As for him being all alone in the tunnel, it wasn't anything new to him. Rhode had tracked countless of times and his current situation brought back many of his old memories.
It was not long after the Starlight Guild was formed when Rhode offended a powerful player guild of that time. Rhode had killed many of their players, thus it was natural that Rhode was on their most wanted list. Eventually, that player guild mustered almost all of their strength and manpower to trap Rhode within the tunnels to try and capture him.