To be honest, i didn't beat it fully until I had 24k power with Earth main and I think I came back to it with 30k power with a Fire main. This is one of those missions that you literally just need to hit a critical mass of power along with at least 1 Acupuncture to help with it. It's a hellish Blue ring that you might have to just skip and come back to and hate yourself until you come back to it.