I suggest if you are having trouble to level up. Xemnas is not at all hard, and you're probably just going to need some power levelling. The best place to level is in The World That Never Was.
You should probably also consider leveling up your drive forms so you can use abilities like Double Jump, Glide, etc. They are pretty useful, and will definitely help you out.
Kingdom Hearts 1: Beat Cerberus in the hades cup Kingdom hearts 2: Complete the Pride Lands for the second time
You can't play Kingdom Hearts Final Mix after beating the regular Kingdom Hearts games. They are separated and needed to be bought if want to be played.
No, just beat Melifecent
Go back after you're done at Hollow Bastion. There will be a sea urchin. You have to mess with that to open the shell.
After you beat the Parasite cage once.
Kingdom Hearts 1: Beat Cerberus in the hades cup Kingdom hearts 2: Complete the Pride Lands for the second time
Play Kingdom Hearts 2 and wait until Kingdom Hearts 3 comes out. Hope that helps! =D
By attacking her.
You have to find lots and lots of heartless.
Fight.
You have to beat Ansem
No
Hearts in Atlantis has 528 pages.
Get Kingdom Hearts 2. That's what I did. Or you can try and beat sephiroth and all those extra things.
Hearts in Atlantis was released on 09/28/2001.
The Production Budget for Hearts in Atlantis was $31,000,000.
Hearts in Atlantis was created on 1999-09-14.