I've beaten Atheon with my friends from US in less than 30 mins after a few try. Got the Legendary Void AR (Atheon's Epilogue)
The team composition and strategy was like this:
2 Defender
2 Warlock
2 Hunter
Relic team: 2 warlock 1 hunter
Portal team: 2 defender 1 hunter
2 Defender and Me (Hunter) defends, while the other 3 goes for the relic. same thing, when time of vengeance is up.. everyone will
jump to the middle platform EXCEPT me. So it'll be 5 people shooting at the boss instead of 6.
Why? Since I'm a hunter gunslinger, my job is to spam ulti and clear the supplicants for the team. There's a spot where you can jump to a pillar and snipe every single supplicant easily with you golden gun spam. It's next to the left portal.
Make sure to clear suppplicants around the portal where the relic team is about to come out. We often see the relic team dead just because we couldn't clear the supplicants who are camping there in time.
As soon as the Time of Vengeance drops to 3 second, the defender Titan will drop a bubble shield for the relic team to jump behind to the entrance. Those who doesn't belong in the relic team, will stay inside the bubble shield until the relic team gets teleported. Another note, those who doesn't belong in the relic team make sure to stay slightly ahead of the person who is carrying the relic so you don't get teleported.
(The rule is, the people who is the furthrest away from the boss will be teleported)
We often f**ked up because of that harpies.
I'll join you guys next time. IGN: Goku_Nazz
Or you can just snipe the supplicants from within the relic bubble since they're all facing you and after you clear the adds you can still target the boss.
Usually you should aim for only around 1-3 supplicants alive during DPS phase, else you're doing something wrong with your rotations.