One question, anything special about their guard? Doesn't look like I can guard combo well enough into it yet, probably without some better skills.
Guarding is really meant to be used in those times when you don't have time to evade an attack. Pressing (and holding) R+Triangle during a combo should interrupt it with a guard at the end of the current move. No way to guard cancel mid-move as far as I can tell.
There are skills that will improve the guard radius (at the cost of defense), improve defense when guarding (sometimes at the cost of guard radius), and lessen knockback when an attack hits your guard.
I personally wish Sword Warriors had a counter like the Cleric (or at least a "perfect-frame guard" ability that helped negate damage/knockback), but whatever.
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Also, if anyone needs help on missions under Chapter 9, I'm available tomorrow starting at 10:00 AM PST at the earliest.