Athena, from high in the tree, had partied up with all the ranged players, forming a raid party. Since she had a way of seeing without using her eyes, she was currently acting as the group's detection device.
Using her necklace of echolocation, Athena could see the enemy players without needing visual contact. Using this, she would relay their location into the group minimap.
This allowed the ranged players on Paragon's side to launch some clustered attack, or 'Tactical nukes' in some sense. The attacks were far from precise, but overload a small zone full of arrows, bullets, and spells, and you were bound to hit something.
Athena also pinned the locations of the spotted enemies into the guild chat, allowing the melee players to coordinate their guerilla assaults.
It took virtually no time for Khalor and Astaroth to start clearing out packs of invading players. It was like a game of cat and mouse for them.