Back at the Bottom
Hollow Bastion is a lot safer this time around without the likes of Maleficent and Riku waiting in the castle. Plus, you’ve already completed all of the puzzles, which makes returning to the Castle Chapel even easier. There will still be Heartless around, but you can handle them. The only thing in your way is a very long trip back to the top.
While still in the Rising Falls, you can activate the White Trinity in the fountain where you lost your Keyblade to Riku to reveal a Treasure Chest. Proceed all the way back up to the Castle Chapel using the same route you used the last time you were here. Nothing relevant to the story happens until you get there.
Princesses of Heart
The Princesses that Maleficent had captured are now gathered in the Castle Chapel. Speak to them for a brief cutscene, then head into the Grand Hall via the Lift Stop. Now that you can actually explore the Grand Hall, you should collect some of the Treasure Chests scattered throughout the room. Hop up onto the higher outer ledge and walk up to the back balcony of the room. At the very top, you’ll find a Treasure Chest with the powerful Oblivion Keyblade inside it. It’s more powerful than the Olympia, but it does take away one unit of MP. When you’ve grabbed everything, head to the giant Keyhole to access the Dark Depths.
Boss: Behemoth
HP: 1350 / EXP: 16,000
The Behemoth may have more HP than even the Dragon, but compared to some of the battles you’ve taken on recently, this one should be a cakewalk.
The Behemoth’s weak spot is the horn on its head, which you can reach by jumping up on its back knees and then jumping up again to its back. From there, equip an Aerora spell to make use of the continuous damage. Attack the horn with a relentless stream of combos. Every now and then , the Behemoth might lower its head, knocking you off. If this happens, jump right back up and continue the assault.
The Behemoth hardly ever attacks, but when it does it can hurt a lot if your Aerora shield has worn off. Be sure to constantly recast it to keep yourself protected. When the Behemoth takes enough damage, it will collapse to the ground and remain motionless for a while, allowing you to hit with aerial combos from the ground, including your new Ragnarok ability, which can land a lot of powerful its in a short amount of time.
Victory Reward: Omega Arts Accessory
With the Behemoth defeated, Sora seals the Keyhole to Hollow Bastion. The Princesses reward you with the Firaga Magic Spell. Return to the Library to find Aerith standing by a bookcase near the stairs. Talk to her several times in a row to receive Ansem’s Report 2, Ansem’s Report 4, Ansem’s Report 6, Ansem’s Report 10, and the Curaga Magic Spell! Head up the stairs to view a cutscene in which Belle and the Beast are reunited. Talk to Belle afterwards and she’ll hand over the Divine Rose Keyblade for Sora.
Side Quest: Coliseum Tournaments
After clearing Hollow Bastion for the second time, the final three tournaments at Olympus Coliseum can be unlocked. If you’ve already cleared the Phil Cup, Pegasus Cup, and Hercules Cup (which you should have if you’ve been following this walkthrough), the Hades Cup is now available. Sealing Hollow Bastion’s Keyhole also unlocks the mysterious Platinum Match. Clearing the Hades Cup will also unlock the Gold Match. These three tournaments are a serious undertaking, but they net you a lot of really good weapons, accessories, and abilities that you might want to collect before heading off to the final world. For more details, refer to our Side Quests pages.
Side Quests: Secret Bosses
It’s also worth noting that the sealing of Hollow Bastion’s Keyhole unlocks two of the three Secret Boss battles featured in KINGDOM HEARTS Final Mix. The first can be accessed by speaking to the Magic Carpet in Aladdin’s House in Agrabah. The second can be reached by talking to Tinker Bell (while Peter Pan is in your Party) in the Cabin in Neverland. For more details on these Secret Bosses, refer to our Side Quests pages.
Exit to the World Map through the Save Point in the Library. A new location appears next to Hollow Bastion, so it’s time to head off to the last world.