Kingdom Hearts/The End of the World

The End of the World is, like Hollow Bastion, not based on a Disney movie. It is instead formed by what's left of worlds after the Heartless took over. The Heartless here aren't too easy to defeat, and the Behemoth is added as a regular enemy.

You'll be starting in a small cave. Simply walk through the opening to trigger a cutscene. Walk forward for a small scene where the large ball of energy comes down and starts a battle. You'll be introduced to the new Heartless here. For information on specific Heartless, see the Heartless page. After the battle is over and you successfully defeat the Heartless, you'll return to the area you were in before the battle with the Heartless. Here you'll find that opening each treasure chest (or trying to open one) scattered along the side will launch you into battle. This is a good chance to grind, and you can also get a reward from the treasure chest after the battle is over. However, these battles aren't necessary and can be ignored if the prizes aren't desired.

Head into the light all the way at the end of the path and you'll be immediately thrown into a battle pitted against a Behemoth. Defeat it to make it to the next area. This area is large and has a bunch of platforms scattered around. Gradually glide forward, but also let yourself fall until you see a light. Jump into it to move on. Once you make it to the next area, walk into the light in front of you. You should end up in an area looking exactly the same except for a large, dark, vertical beam in the center of the room. Walk into it to be taken to Traverse Town.

Revisiting
After entering the strange light, you'll end up in Traverse Town. You're specific goal will be to wipe all the Soldier and Large Body Heartless out of the third district. Afterward, simply exit through the tall wooden doors to go back to The End of the World. From where you ended up, go forward into the next small light and you'll be teleported into the next area. Another beam of dark light is centered in the area. Walk into it to end up in Wonderland's Rabbit Hole. Here you'll face Red Nocturne, Blue Rhapsody, Yellow Opera, and Green Requiem Heartless. After you defeat all the enemies here, repeat by finding the door, walking into the next light, and then walking into the next beam to end up right outside the Olympus Coliseum. The process keeps repeating with Deep Jungle, Agrabah, Atlantica, Halloween Town, Never Land, and then finally the 100 Acre Wood. All there is at the 100 Acre Wood is a Save Point - no Heartless here. Exit the "world" and once again walk into the light. Instead of the beams as seen before, this one will resemble fire more than dark energy.

Chernabog
Once you enter the area, you'll be immediately attacked by Heartless. Defeat them and then move on to the door, which slides open to reveal a small room. Examine the strange mechanism in the middle for a reading. After you're finished reading, a group of Heartless will attack. Defeat them all and you can then jump through the dark orbs from which the Heartless came. Jump into the large opening in the floor to begin the boss fight.

After the battle, descend into the volcano where Chernabog was fighting you from. Keep descending the platforms until you reach the ground floor, where there should be an opening filled with light. Walk through it to enter a new area. Keep moving into the light in every new area, until you come onto a green ground where you must battle many Heartless.

Ansem
Head through the door and you'll end up back at Destiny Islands. Go to the Secret Place to trigger a cutscene. Get ready, because next up is the final boss fight.

After the previous battle will be two more bosses, which Sora fights alone. The first is Darkside - the same enemy, but with a larger HP bar. This shouldn't be too hard to defeat. Afterward, you'll be facing the final boss of the game.

After the battle, enjoy the ending cutscenes - you've beat the game.