I was at level 6 for both Vahn and Noa. Make sure you have the Tempest Break Art for Noa. (Check arts section) It will be VERY helpful. Basically spirit with Noa and then use tempest break. Vahn can use his Tornado Flame and cure when needed. (Absorb Vera to learn cure) If you have enough points, use the point card. This battle should be easy.
BOSS 2: VIGURO X2 DIFFICULTY: MEDIUM
I was at 11 for Noa and Vahn, and 10 for Gala. Noa's Super Arts help alot. (Check arts section) Spirit with Noa and Gala, and have Noa do her Super Art and Gala just do any art. Vahn should cure if need be. If not have him attack with Tornado Flame or Hurricane. Later these guys will be regular enemies!
BOSS 3: SONGI DIFFICULTY: EASY
You fight this with Gala alone. I had him at level 12. Try to have him absorb Theeder. It helps. Use Thunder Punch, and cure when needed. (Absorb Vera) This battle should be a breeze.
BOSS 4: ZETO DIFFICULTY: MEDIUM HARD
Vahn and Noa were at 14 and Gala at 12. What makes this battle a pain is Call Wave. When he does Call Wave. Spirit everyone. If not all of you will be taking 500 some damage, instead of 300 damage. Use Noa's Super Art. Use Vahn for curing or any combo. Gala should use the Point Card once, and then Thunder Punch. Since Zeto is water, Thunder Punch will do alot of damage. Good Luck.
BOSS 1: Berserker DIFFICULTY: HARD
This boss is a pain. First off he can rot some of your attacks. He deals ALOT of damage. And when he's almost dead he'll cast Stone Circle which attacks everyone for 400. I was at level 14 with everyone. Fire spells are good with Vahn. Theeder does alot with Gala. Use Noa's Super Arts and cure with Vahn when needed.
BOSS 2: Xain DIFFICULTY: HARD
I hated this guy. I was at level 16 when I fought. Try to be at level 18 though it might help. Hopefully you have alot of points on the Pint Card. It could help. And MAKE SURE YOU HAVE ABSORBED ORB. It heals everyone and helps alot. Use Vahn for curing. If you need to pump Noa up to level 20 or 21 so she can preform her Miracle Art. Otherwise attack with Gala and Noa and cure with Vahn. If his MP gets low use a magic leaf.
BOSS 3: SONGI DIFFICULTY: EASY Songi is easy but long. Use Noa's Super Arts. Cure with Vahn, attack with Gala. Nothing special. Watch out for his hyper attack that hits everyone.
BOSS 3: SARYU DIFFICULTY: MEDIUM HARD I was on level 20. Use point card. And Miricle with Noa. Cure with Vahn. Watch out for his all around lightning attack. (I thinks it's lightning) and keep your Hp high.
BOSS 4: DAHATI DIFFICULTY: MEDIUM
Spirit everyone. He will do Chaos Breath first turn and if you didn't sirit you'll take 900 damage. Maricle with noa, and pound away. Cure when need be. That's it for those bosses.
BOSS 1: GAZA
BOSS 2: GAZA W/ SIM-SERU
BOSS 3: THE DELASIES
Attack, Spirit. Alternate that pattern. Attack, Sprit, Attack Spirit etc. Cure when necessary.
Jette can be annoying. He clones himself. The clones only attack for 4 or 5 so concentrate on the real Jette. Watch out for shadow break. Just attack. You'll have to kill the clones at the end. For some reason.
Cort is a long boss...he starts out with a sheild around him, magic is useless so use your best arts. He will cast Guilty Cross and Magic Circle. After destroying his sheild keep your Hp high at all times. Cause now he can summon Juggernaught against you and he still does Magic Circle. You can use magic but I suggest using your best arts.
SONGI FOR THE LAST TIME
He's big bad and hard. Use your Point Card and attack, watch out for most of his attacks, because they will HURT! Attack with your best arts again. Make sure you have Horn it saved my life! Get Horn bye showing Cara's Ra-Seru egg to Zalan in Jerimi.
Personally I thought this boss was easy. Always have one guy Spirit every turn in case he does Doomsday. Except for the first turn. Use the Terra and Meta spells and have Gala use the point card. Now Spirit next turn and cure whoever got hit. Attack with your Maricle arts, have Gala use Horn when needed. If he uses Ultra Charge. SPIRIT! If you don't your pretty much dead. Good Luck.