Any macros or strats for this for a single group?
Depends on your level I suppose. Ran this with 6 toons at 95 and it was a joke.
You can "Might Makes Right" your way up to the last 3 bosses, essentially. Even those, it's fairly simple.
With 80-100k hp, the DTs wont even come close to killing you. Nor the adds. I ignored all of that stuff.
Vish is your first "mechanic" and just hit him to 25%, keep good ae aggro (or dont, doesnt matter, hits for nothing). then i just waited til mournful souls fgot close and hit my shoulder-my-burden key so I could knock 1% off his HP lock at a time. It could be handled with a macro but i was too lazy to write something for that.
Big Bynn is another "mechanic". He'll spawn crystals around the room. unless you;ve got 1mil+ dps, you'd wanna have your dps roam and kill the crystals as they spawn. He went from 40% to 100% on me when i ignored the crystals. It's annoying at worst.
Lethar has some stuff. just punch him a lot and he dies. nothing to worry about if you have 80k+
Broodmother has a whole lot of adds. i killed the first few waves, then burned her down at her spawn point. let adds die to ds or killed them if they started piling up.
Kerafyrm has a lot of mechanics. You can ignore almost all of them. He summons the moment he has LOS, so expect that on your driver toon. Otherwise....he has a stun that locks our spell gems for 10 sec (every 11 sec) if you're casting when it hits. i just let the macro try its best and didnt get low health at all. at 75ish, start burning when the wyvern adds spawn. he has a lot of hp. wyverns spawn between 75 and 35%. they kill the guardians that you're supposed to be doing mechanics with and aren't. Largely i just killed him all the way down.
Something to note though, the charm augment you get full stats on (based on your account lifetime) after 1 event. so kill naggy and gtg. if you want the other one (its kinda meh at 95), you hafta push to the end.