Directions:

Unlock alternate ending:
Finish the game with all keyholes, 99 Dalmatians and the Hades Cup completed to unlock an alternate ending.

Hint:
In the first world wich is the island were the character lives talk to everyone in the island one time only then save. After that fight with the other kid then riku after that you can go to a saving point were you will go to the chipp ship. After that all of the worlds are available.

Hint:
In the beginning of the game you are on destiny islands. When you see a thunder storm and run outside there will be heartless. Do not try to attack them they will not go away. (your sword is too weak) Instead go in the shack and across the bridge there you will recieve your keyblade. (this will help you not lose your life so you can defeat the heartless later and take on the big black thing)

Hint:
With the white mushrooms, in order to get the spell arts, you must cast a certain magic 3 times with the same magic however they do not have to be in a row so wait for the mushrooms to move into the same pose.

Poses/Magic:
Shivering/Fire magic
Squatting or sweating/Blizzard magic
Light above head/Thunder magic
Spins/Aero magic
Floats off the ground/Gravity magic
Falls on the ground/Cure magic
Stops completely/Stop magic

Hint:
If you need mystery goo and your not very good with the rare truffles (which you have to knock into the air) the white mushrooms drop mystery goo along with the spell arts.

Easy mystery goo and items:
Go to halloween town, and go to the bridge area. There might be rare truffles there. If there are, go down into the water, and go to the far right side of the screen. There should be one there. Cast aeroga or aeroa and knock it over to one of the hills. Just sit there while the sheild hits it up in the air, and recast aeroa or aeroga until you have hit it in the air 100 times.

Misc. hints:
The enemies in the colosseum will not drop items so don't bother trying

During the fight with Riku 2 at Hollow Bastion, use the Olympia keyblade for some reason this makes the figt easier

While fighting Cerberus don't take him head on its suicide instead lock on to a side head and show him what the keyblade's made for

While fighting the ice titan you must hit the shards he spits at you back at him however if you use aero magic the chunks get huge and impossible to hit back at him

While fighting the dragon at hollow bastion use the beast instead of goofy, abilities must at least be strike raid and ars arcanum then cast tinker bell, customize your slots with aero magic and cure magic, jump on the back of the dragon (by way of the tail) and stand at the bease of the neck, use strike raid, also have many ethers for quick mp recovery.

In the beginning of the game you are on destiny islands, to level up easily fight wakka and knock the blitzball back at him this give you a tech pt and gets you closer to leveling up.

At the beginning of the game you are faced with some choices, picking the sword and sacrificing the staff you are improving your strength but depleteing your mp count. Sheid/Defense; Staff/Magic; Sword/Strength

The questions you are asked the first answers make you level up at a fast pace the second answers medium and the third slow. For instance a being the first a makes you level up fastest. It is done by majority so the most you pick thats what your gonna get.