Originally Posted by
Sandwrong
What we do, is we all clump around on the left side of the platform, (don't stack, just make sure you're all on the same side of the platform) and when the seeds spawn we all shift to the other side of the platform, this way you can take way less damage from the seeds exploding, and kill all the adds together on their way to you. Next Molten Seed, same thing, but starting from the right side.
Smash should be pretty easy to avoid, as it's marked by three huge lava pools about five feet away from you, and you just have to get out of it's line of fire (move two feet to your left)