I updated some of the Golem NM information, seeing as I just got to fight it firsthand ;x That was a pretty fun fight, though. A lot different since we had to split up the fighting for once on a boss.
But to answer the question at hand, it's best to split your alliance up if you are melee heavy. At tier 2 you can still manaburn, but it's not going to be as efficient as it was on Tier 1 because of multiple waves. It's possible, but you might run into magic resistant mobs (if there are any?)
A lot of the mobs on that floor can be double assisted, but the one's I'd stay away from are Slimes/Kraken/Draguar.
XI Wiki


