I feel that the center tactic is risky only because if the shield goes down the whole team can wipe. If it stays up we always have success but it's getting to the middle and leaving the middle where timing is critical. I like to skirt around the sides if I don't have the relic and shoot and distract Atheon to draw his fire temporarily, that backfired once when I pulled him too far away for the center team to shoot. From all the strategy videos I've seen, the center strategy is the way to go, it's just timing, communication and execution from all teammates that plays a larger roll. I think we have gotten really good at the final boss and should be able to take him down more consistently from now on.