Umm ok... Let's see... Have you got lots and lots of Meltdown magic? That helps. It makes your physical attacks ALOT stronger. At this point in time, I would be focusing more on magic, physical and limit break attacks (making use of all the junction abilities!)... GF attacks are kind of useless in the future. Umm put Meltdown as a status attack for whoever has Siren. I think she's the one that has the junction.
Hehe... They SAY it's hard to get the Ultimate Weapons, but it isn't really. Pulse Ammo comes from Energy Crystals so you'll need alot of them. You'll also want Ultima magic, yes? Mwahaha... In Esthar, I can't remember where, but after Lunatic Pandora attacks, there's this dark shaded Esthar soldier. If you talk to him, he'll go 'Eheheahaha' or laugh or something, and you'll get thrown into a battle with a monster. Enoyle I think? Anyways he give you all the crystals you'll need. After you beat him, move out of the screen and back into that screen again, talk to him and the cycle continues! YAY! MORE ENERGY CRYSTALS!
To get the other items, you can also play alot of Triple Triad. Not only is it really fun, you can refine the cards for rare items.
What else... Are you training at The Island Closest to Hell? I think the Ruby Dragons also have Energy Crystals, but I usually get them from they Enoyle monster thingy... Yeah...
Anything else? :ph43r: