Kingdom Hearts 2 Cheats

Secret Endings
Just like Kingdom Hearts I and Kingdom Hearts: Final Mix, Kingdom Hearts II has a special secret movie that can be viewed at the end of the game, after the credits roll.

In "Beginner" mode, you can't unlock it at all.
In "Standard" mode, you must fully compelte all the worlds and Jiminy's Journal to unlock it.
In "Proud" mode, you need only fully complete all worlds.

Unlock Ship Models
Cactuar S-Rank: The Broken Highway Mission 2
Cait Sith S-Rank: The Sunlight Storm Mission 2
Chocobo S-Rank: The Ancient Highway Mission 2
Fenrir S-Rank: The Assault of the Dreadnought Mission 2
Highwind Model S-Rank: The Asteroid Sweep Mission 2
Kingdom Model S-Rank: The Asteroid Sweep Mission 2
Mandragora S-Rank: The Floating Island Mission 2
Moogle S-Rank: The Splash Island Mission 2
Mushroom Model S-Rank: The Assault of the Dreadnought Mission 1
PuPu S-Rank: The Stardust Sweep Mission 2
Secret Model S-Rank: The Assault of the Dreadnought Mission 3
Tonberry S-Rank: The Phantom Storm Mission 2

Unlock Berserk Mode
You must achieve a Metal Level of Level 30.

Unlock Hades Paradox Cup
Max out all four drive forms and summons to level 7.

Unlock Goddess of Fate Cup
You must win the previous cups and beat the first fight with Xemnas.

Unlock Torn Page 1
You can find it in the Disney Castle's Library.

Unlock Torn Page 3
You can find it in the Hallow Bastion at the Crystal Fissure.

Unlock Torn Page 5
You can find it in Agrabah at the Tower.

Unlock Torn Page 4
You can find it at the Land of the Dragons in the Throne Room.

Unlock Torn Page 2
You can find it in the Pride Lands at the Oasis.

Unlock Secret Movie on Proud mode
All you have to do seal all Keyholes.

Unlock Paradox Cups: Cerberus Cup
You Form levels must be at Lv. 5, except Final Form. You must also unlock Paradox Cup: Pain and Panic.

Unlock Paradox Cups: Titan Cup
Your Summon level should be at Lv. 5 and have the Paradox: Cup Pain and Panic unlocked.

Unlock Titan Cup
You must complete the Olympus Coliseum for the second time.

Unlock Pain and Panic Cup
You must complete Disney Castle for the first time.

Drive Gauge Filler
For Forms you get later, there is a quicker way to refill up the Drive Gauge. First, once the Drive Gauge fills up, do a Drive as usual. Before the Drive Gauge goes to empty, use a save point to exit out to the WorldMap. Come back and your Drive Gauge should be back to Max.

For a second way, it is with Olympus Coliseum later on. Enter and Exit out one of the Tournaments, your Drive Gauge will also be Max, regardless what you had.

That means if you have an empty Drive Gauge, you can fill it up to Max with the second way. Remember, later on, Summonings also require Drive Gauge and that means this is pretty handy.

Easy Coliseum Points
After you get the Ukelele Charm near the Computer Room in Hollow Bastion, go to any Underworld Coliseum Match and Summon Stitch. The second you do, wait for Ohana to appear in the Limit space. Use it, and use the square button command four times. Then, while there is still time, use the TRIANGLE command. After it's over, you will have time to use it again. When you are done, you will see you have a lot of points, but no monster is dead.

You might think it's useless, but if you want to see the Secret Ending in Normal Mode, then you'll almost need this trick for some of the matches to complete the insane amount of points you need to complete the Olympus Coliseum part of Jiminy's Journal.

Master Form Fast Mastery (Fastery)
Easily level up Master Form by going to the corridors outside Ansem's Lab. Leave Ansem's Lab and go to the first main room. Three Crimson Jazz enemies should appear. Change to the Master Form, beat the enemies, and collect the orbs they drop and keep moving to the other enemies. It's possible to kill them all within the same change. When you Drive Gauge depletes, go to Olympus for a recharge. You can find seven Crimson Jazz enemies for a total of 70 to 80 XP each time.

Hades' Paradox Cup
Max out the level of your summoning and all your drives (including the Final Form).

Luck Has Nothing To Do With The Crap For Synthesis
Synthesis materials a must if you want the Ultima Weapon or any of several extremely useful items. If you are having a hard time collecting enough materials for synthesis, try to put both Donald and Goofy into your party, then equip Sora, Donald, and Goofy with the "Lucky Lucky" ability (5 AP to equip, Sora won't acquire it until lvl.99 if you chose the staff with Roxas after meeting Namine).

Equip them with the weapons that have the "Lucky Lucky" ability: Sora- Sweet Memories keyblade (100-Acre Wood), Donald - Meteor Staff, Goofy - Genji Shield (Olympus Colussium). Finally, equip one of the three with the Lucky Ring accessory for a total of 7 Lucky-Luckys. Enemies should drop items at a far greater rate, sometimes even two items at once.