Equip Oathkeeper and the abilities Reaction Boost, Explosion, and EXP Up for some extra
levels. First, use Rising Sun to get yourself into a corner. Then, keep on using air
combos on the floating Heartless and ground combos and Rising Sun on the infantry.
Whenever you can, snag a floater and use Sparkle Ray, then finish off the survivors.
Oathkeeper will give you fast powerful combos; explosion can kill about eight Heartless
every time you use it; and EXP Up will ensure that you get lots of levels if you have low
health. After the fight you will see some intermission sequences, have a chance to go back
to other worlds and finish them, and obtain the Gullwing keychain from Yuna, Rikku, and
Paine.

This can be done at almost any time with Sora or Roxas. Get on a skateboard and do a
heelflip, jump, jump and trick, etc. but do not move. You will hear the sound made when
you are moving but you actually are not.

Finish the stated task to obtain corresponding Keychain for your Keyblade:

Bond Of Flames: Defeat Axel at Twilight Town. 

Circle Of Life: Speak to Simba at the Pride Lands. 

Fenrir: Defeat Sephiroth at Hollow Bastion. 

Follow The Wind: Defeat Barbossa at Port Royal. 

Guardian Soul: Defeat Hades in the Underworld segment at Olympus Coliseum. 

Gullwing: Speak to Yuna after getting Guardian Soul. 

Heros Crest: Defeat the Hydra at Olympus Coliseum. 

Hidden Dragon: Defeat Shan-Yu at The Land of Dragons. 

Holy Pumpkin: Defeat the Test Subject at Halloween Town. 

Monochrome: Defeat Pete at Timeless River. 

Oathkeeper: Finish Sora's first visit to Twilight Town. 

Oblivion: Defeat Xigbar at The World that Never Was. 

Photon Debugger: Finish Space Paranoids. 

Rumbling Rose: Speak to Beast after returning to Beast's Castle. 

Sleeping Lion: Go to Ansem's study at Hollow Bastion. 

Star Seeker: Obtain Valor Form at The Mysterious Tower. 

Sweet Memory: Finish the Spooky Cave mini-game at 100 Acre Wood. 

Ultima Weapon: Get the Ultima Recipe in the Twilight Town mansion basement then make it at
a Moogle Shop. 

Wisher's Lamp: Defeat Jafar at Agrabah. 

Wonders Of The Abyss: Finish Chapter 4 in Atlantica.

Once you acquire Master Form, you'll find it in the hallway to the computer room in Hollow
Bastion.

If you are in a transformed state, ride a skateboard to stay in your transformed state,
even if your Drive gauge goes to zero. However, if the gauge is already at zero and you
get off the skateboard, you will return to your regular Form. This is also possible when
you are in The Land Of Dragons and you use the reaction command "Ride The Wind". You will
stay in your transformed state even if your Drive gauge reaches zero. However, when you
get off you will switch back to normal.

If your Drive gauge is almost empty while in your transformed state, quickly go to a save
point and go to Gummi Ship. Then, go to any world desired. When you are in the world
selected your Drive gauge will be full.

To fully refill your Drive gauge, go to the Underworld and replay the first round of the
Cerberus Cup (not Paradox). Then, quit the round. You do not have to do any fighting and
your Drive should be at maximum when you return to the entrance.

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.

On your second time through The Pirates Of The Caribbean world, just after you collect the
fourth medallion there is an intermission sequence. Will tells Jack that they need to help
the people at Port Royal. Jack Sparrow walks up the stairs and he is not a skeleton, but
he should be due to the taking of the gold. The moonlight is shining on him clearly, and
yet he is not a skeleton.

When you are fighting the opponent the second time at Beast's Castle, there is a way to
get four or more Learns. When he makes the lighting come at you, just start running. When
you see a small gust of wind behind you, immediately jump. While in the air you will have
the command for Learn. Immediately press Triangle then repeat.

When you have low health and no magic or potions, but a full Drive gauge, turn into any
Form and you will have full health.