180 boss is the hardest op. Controller has nothing to do with it. I beat it with controller but it was a scrape

You want to get pomander of lust up on it around 21% and push him into starting his meteors when he's mid going to the side of the arena for cleave or charybdis so you have more time
He starts using meteor at 15% health.
His meteor does 80% of your health every 8 or 9 seconds. So if you're a healer or rdm with sustain potions, you can attrition it.

Dont stand directly in front of him during the cast. He can still auto you.