It's pretty easy. Just don't have everybody running all over the place. Stick together in the back of the area (the side of the 'hidden' orcacles) and just move left/right/centre on that side. You have enough firepower to defend eachother from the harpies and you can hit all oracles. Or just have everybody sniping at the boss like most do with the oracles and have 1 player down there with the relic. This is what you get with all the lvl 30 elitism. Suddenly, some of em suck when cheesing gets fixed. Smh