Chain of Memories One perfect way to beat marluxia

First have the neo shadow card along with malificant (dragon),oggie boggie,and jafar.
Then have at least 50 attack and cure cards.I sugest 40 attack, 7 cure,and 3 elixters.When the battle starts use neoshadow.
Next keep away from marluxias attacks for awhile.Dont attack unless you want him to use his "super attacks". After awhile use malificant and then start to attack. His HP should be mostly depleted(depends on how long you use neoshadow) and use oggie to restore your HP.
Finally when his HP is gone watch them all have their memorise returned and watch the credits.After the credits when you go to load the game you will see that you can play Riku's side of the story.
hoped I helped some . Enjoy!

 

I find my strategy of "Never used sleights, have high level cure cards, break him always with cure, attack with cloud on the back of the machine" works okay too.

Remind me, what does Neoshadow do?

 

I find that trying to fight Ansem for the final time in Riku mod without sleights is impossible. I play it on my DS and the R trigger is broken.

 

In the game, Marluxia isn't that hard.

Neoshadow gradually drops your targeted enemies' hp down.