A friend explained it to me once. I forget what he stated as a strat for the gatekeeper. That might have been the only part where he had to have someone grab it. But even then, they would only need to hold it. Not actually do any fighting. Kind of like the technically having to have three to open the door to exit gorgon maze. Yes it may be kind if fudging it a bit, but not hard to overlook for a legit solo. Atheon, just suicide just before teleport, self res and fight. Oracles don't matter after that. Rinse and repeat until he is down. Apparently you can hide in part of the area where if you jump at the right time, the teleport does not register you and you can keep going for a while longer too. I'm not a lock and not seen it done, but after two manning it I can see how it's plausible. And the guy I two man it with has done the jumping trick a number of times to get his super up quicker.