I have yet to complete the challenge for Atheon, but here's what I've learned: When you see someone come out of the gate, you go in. Kill your Oracle and get out ASAP. If you have the relic a couple of slams kills Oracles. If you have relic stay by the time gate so people get cleansed on the way out. It's possible to get him down in one go, but if your seeing that you aren't dealing enough damage, leave the center platform five seconds early. The extra bit of damage isn't worth a wipe. Take care of supplicants. If you have an crowd control super then use it. Stormcallers are aces in this raid. Rockets. Please be careful, we all like gally but it's caused me and my group to wipe more than once. Talk. We aren't mind readers. Edit: Just beat it 😎