I am embrassed to to say this...

But i cant beat this boss....

He is just soooo annoying....

I get him to about 12000 hp, then he uses Annihilation on me!!!!

Anyone got any tips to kill this boss....

Thanks in advance

Yeah, I'm stuck on the exact same bit too....help would be good :)

1. Get Wakka leveled up so he has high Strength and Accuracy

2. Get his Overdrive Gauge full.

3. Use Attack Reels.

I had problems with him not long ago and I almost sunk to posting a help thread but here's what I did...

Go back down the mountain and level. I went into the calm plains to do that monster catchingquest to pass time. In the meantime, while you're doing this, max out your overdrive gauges(especially with Aeons) and keep them that way until you fight Seymour again.

Then, when he's about to use Total Annihilation, Haste up Yuna with Tidus and let 'em loose!

Yeah, cheap method. But it works with almost any boss.