Okay, am I missing something with theTelethia fight at the center of the Bionis? I'm only 3 levels below it and yet my best attacks don't do more then a few hundred damage and its immune to Monado Purge. After five minutes of a touch fight I think I may have gotten its health down one tenth
it has a very very high defense against physical attacks, but it is very weak against ether based arts.
use melia, riki would be a good supplement
being less than 2 levels below her helps too.
being less than 2 levels below her helps too.