Well if you don't have any of the new raid weapons I would run . Oracles - high impact fusion with fast reload , or a gallahorn or sleeper. You really need an oracle disruptor weapon which will drop . Don't bother with autos or scouts on the oracles your wasting too much time expecially at atheon. My initial run was -Templar Necro / distant star Saladins vigil / matador for templar Steel oracle gallahorn Atheon - Vision of confluence / atheons epilogue / oracles And sleeper sim for atheon We were able to wipe atheon in one relevant cycle . We had 4 sleepers and two atheons epilogue adept . At atheon killing those oracles fast is key . If your reloading your taking too much time . If your using sleeper make sure to have fusion boots and a heavy chest plate so you can have 12 shots . 1-2 for oracles and the rest atheon. Hope this helps