While Riku doesn’t have a cool getup like Sora did in this town, Riku is scary enough with his vicious sword attack. Riku starts out with the Key of Beginnings Card and needs it to open the crown door coming up. The upcoming boss battle is by far one of the easiest, so don’t feel obligated to create a save point beforehand, although doing so could not hurt.
Boss Battle: Oogie Boogie
Oogie is not as big of a trash talker this time around, but otherwise he is exactly the same as before. This means that since Riku is stronger than Sora, and you already know Oogie’s patterns, this fight will wrap up nicely. Again, Riku must break Oogie’s attacks to lower the gate between the two of you, clearing a path to that inflated burlap bag.
Once the gate is lowered, change to Dark Riku and use as many Sleights as you can in the short time before the gate raises again. Dark Firaga is your best bet as it takes Oogie down half of a health gauge in one hit.
In the same way as before, Oogie Boogie throws three dice which, after Riku breaks the upcoming move, can destroy the dice, freeing a Gimmick Card. As the Gimmick Card hides at random in one of the three dice, it is just as useful as before, since it lowers the gate for a few moments.
After defeating Oogie in the most ferocious way you can think of, Riku levels up and gains the Oogie Boogie Card. By now Riku should be pretty powerful, and will need that strength coming up. After the fight, exit through the left door and make your way to the north-most room on your map, saving before exiting Halloween Town. Once back in Castle Oblivion, run up the stairs to trigger another scene with the Organization.
Lexaeus appears, telling Zexion that Vexen is dead. Zexion is perturbed by Axel’s actions of killing a fellow agent, even though Axel’s actions were in fact incredible. Zexion mentions their “Superior” and how he is “in need of the hero of light”, no doubt speaking of Sora. Their plan is to contain Sora by learning to control Riku.
Riku is back in Castle Oblivion and stops to reflect on the last card in his possession. He ponders whether he has the strength to combat the darkness with the skills he has. Riku’s fate relies on you now. Walk up to the door and select the last World Card, Wonderland.