The Final Battle

I've made it to the final battle but the most I can ever do is destroy one of the arms. All of those other monsters keep getting in the way. What should I do?

I'm still getting wiped out... What levels should I be at?

Oh, alright. Mine are only 46-47. I guess I'll just level up then. Thanks.

my characters are 55-58 and i still get beat. Maybe i need to rethink my strategy.

yep. you need to first attack the right arm then the left. when those two are destroyed, make sure you have wyvern beccause you could use them on the center to do some damage without hurting yourself. when they get destroyed, summon more while healing. also, to avoid attacks from the direct center, stay next to the str railing while sending wyverns to the orb or whatever. when behamut comes, the only advice i can give to you are to avoid megaflare. one more thing to do is to use kytes to use charge then start dishing out damage to behamut with his elemental attacks.