Omega The Ultimate Letdown

[T.G. Oskar]

The problem is that he died IN ONE HIT!!!!! Only 3 abilities were needed, and my characters were so under-leveled that I expected to get creamed (+- lvl 35 against Omega, lvl 40 by the time i finished ExDeath)

I'd say it's the tactic, perhaps...

[...] I had started playing FF5 on a snes emu many years ago but never got to finishing it. I recently started playing again from scratch, got all the way to Omega and was ready for a super long and hard battle (such as Omega Weapon in FF8), so I quickly buffed my whole party to get ready for a long haul.

I then hit him once with X-fight (with 2 weapon and lightning 3 magic sword) and he keeled over like I was squashing a fly.[...]

Erm...yeah. Rapid Fire/Dual Wield/Spellblades. That's like saying Sephy is hard to beat because you used Knights of the Round. I think that's the solution to the problem: it's meant to be a challenge without the exploit. Dealing something close to 80,000 HP in a single turn should be capable of slaying darn near anything (Bolt 3/Thundaga should probably have dealt him 9999 damage, if not something over the 6000 points), even more when you exploited his exploit. Consider that you lasted 3 turns; if the party had died before that, then it would have been even worse. So I should also agree with party composition and levels in jobs (remember that you could be level 30, but mastered all jobs because of fighting high AP monsters).

Shinryuu is harder mostly because of that; it's harder to use the exploit on him. Though supposedly Dual-Wielding Crystal Lances works?