The Horrible Reward Of Beating Sephiroth :o

[Tavrobel]

Very handy advice Tavrobel, thank you. Just one question though :

How come square's a bad idea? I don't use it much as is, mainly 'cause Guard is slow, but I seem to be missing something too.

It's not that it's a bad idea. It's just that you'll rarely use it (it's a personal joke, too, don't worry about it). This could very well have been the only battle where I used it. Mechanically speaking, Aerial Recovery is more useful because it raises your vertical distance and takes up less time.

Alternatively, if you're going to rely on abusing how Second Chance or Once More work, then as long as Sora remains in "recovery" stance, he can't be defeated. This invalidates the use of either of those two recovery abilities.

As far as Guard is useful in KHII, it's got a nerf since KHI. The major reason is exactly what you said plagued you: it's too slow. Using Guard is largely a matter of timing, and the time spent focusing on when to use it to get the whole enemy attack is better used getting out of the way, not that it lasts nearly as long as it did in the first game, either. Even then, it only works on the ground, and Sephiroth's battle is mostly in the air (actually, same idea applies for Xemnas, too).

[PuPu]

Also, it's the only way to get high enough and quickly enough to reach Sephiroth while he's preparing a DHA (Sin Harvest).

Assuming he's doing the Trinity-Berserk strategy, Trinity Limit also can reach Seph.

How come square's a bad idea? I don't use it much as is, mainly 'cause Guard is slow, but I seem to be missing something too.

Guard and Quick Run are possibly the two best ways to avoid attacks in the game.

The good thing about Guard is that it gives invincibility frames even after Sora has already finished his "blocking" animation with the Keyblade, except when used against a deflect-able projectile (the ones that get sent back to the enemy). Because of this, you can actually Guard multiple hits in a combo with just one Guard, even for a half-second after Sora is out of his blacking animation.

Just remember that Guard is the best ability in the game.

[Tavrobel]

It is also slow and cumbersome, requires a proficiency in timing that is largely unhelpful at any other point in the game, and that singularly "best" abilities can be outdone by some quick thinking and a combination of other abilities.

[RedPouch]

I think I killed Sephiroth when I was 55 in KH1 and level 52 when I was playing KH2. He's a lot more difficult in comparison to the other bosses in those two games, but he really isn't that hard. People that are used to games like Ninja Gaiden will easily recognize that stupid try-hard Sephiroth's poorly-prepared attack patterns and be able to deal with him.