Help on the 2nd Riku battle in Kingdom Hearts Re: Chain of Memories?

Riku II is an upgraded form of Riku, but for the most part, he's still the same. However, there is one major difference that actually makes him WEAKER. Unlike your last battle with Riku, Riku will this time around use combos a lot - this is because now he has a magic attack, Dark Firaga. When you see him using this combo, wait a small amount of time, and as soon as he casts it, dodge roll the opposite direction of what the flame is headed in - it won't turn around and try to hit you.

The implications of this means that Riku will run out of cards a lot faster, building up higher amounts of Focus time required, and overall giving you more time for ruthless attacks. As always, don't use any Combos, as you'll need all your cards for each runthrough, and bring in some Cures. Riku is still as fast as before, so again, I don't recommend using magic and weak Summons(With the exception of Fire). However, if you do want to use a damaging attack that might take a bit of time, use it just as he starts his Firaga spell, as it does take a small amount of time to use.