Adds will use self-destruct for 1000~ damage a few seconds after spawn.
NM hits for around 100.
NM will grow after each berserk, then 3-4 berserk later will use Vulcanian Impact and spawn 1-3 bombs which will self-destruct as soon they spawn.
Did 3 runs WHM/RDM, WAR/NIN, NIN/BLM(oops). NIN and WAR had empyreans. 1 run with WAR NIN BLM.
Had no problems zerging boss and nin saving tp to one shot adds just watch out for vulcanian impact.
Did 7 runs with 3x smn/rdm. Used leviathan and Spinning dive. Mp wasn't an issue, just have to stay away when it spawns adds until they self destruct. Incredibly easy fight.
Can be soloed by a well geared SMN using Leviathan. Summon, Spinning Dive, run away, unsummon, repeat. Ran a little bit low on MP, but had enough to finish. 1509 starting MP and only about 150 at the end, so might want to bring a hi-ether.