My group just won. At the end we split the mages up on the middle tiers. Had 2 Blm and a whm on one and a blm amd a whm on the other. The other. The 2 Blm focused on the meteor closest to them and the Blm and both whm focused on the other side. We killed the Golems but it didnt do anything. Eventually he megaflares and it only hit me as a blm for 1800. Then you just fight like you have been until you win. No mor surprises.