Kingdom Hearts Re:Chain of Memories

For this trophy you must max out Riku's level to 99, which is a grand total of 1,310,000 Experience Points. Unlike Sora you cannot customize your deck to alter it in your favor, all you can do is keep fighting. Fight in Castle Oblivion where you can net the most experience, use Sleights such as Dark Aura when possible and use the Jafar Enemy Card so that the Neo Shadows can't break your cards.

Not much else to say but to keep fighting and fighting.

Level Master Riku