Because of the fact that, after he's defeated, Eraqus' heart rests in Terra's body, would that mean that Xemnas and Ansem, Seeker of Darkness, are Eraqus' Nobody and Heartless as well? We know that they're Apprentice Xehanort's Heartless and Nobody, and Apprentice Xehanort was Terra-Xehanort. The reason they were able to also be Master Xehanort's Heartless and Nobody was because his heart was in Terra's body, which was the body of Apprentice Xehanort, too. So with that in mind, is it possible that Xemnas and Ansem, Seeker of Darkness, are Eraqus' Nobody and Heartless in a sense, too?
For Terranort, it's what Mixt said basically, but his meteor attack CAN be dodged. It's a bit creative, but you'll need a blade rush shotlock. You just charge it up to max when he's summoning meteors, and when he fires them at you, activate the shotlock and dodge/be immune to them while you charging through.
Basically, the way I beat him is simple. You're going to want at most, two curagas. Fill up the command bar with whatever other skills you usually like, and go wild on him with those and your regular attacks. Make sure you have a blade rush shotlock equipped, a max'd one preferably. When he starts raising the stones from the ground, time it out so that your max shotlock is full and ready to be used when he fires the rocks at you, so that you can dodge them all mid-shotlock. Rush out when he's using Ultima Cannon, and dodge and block as many of his attacks as possible.
