KINGDOM HEARTS WEAPONS

Sora- KeyBlades
Spellbinder-Learn all first level spells and then talk to Merlin    
Jungle King-Seal keyhole in Deep Jungle. Tarzan will give it to you
Wishing Star-Open chest in Gepetto's house in Traverse town after Monstro
Three Wishes-Seal keyhole in Agrabah. Aladdin will give it to you
Crab Claw- Seal keyhole in Atlantica. Ariel will give it to you
PumkinHead- Seal keyhole in Halloween Town. Jack will give it to you
Fairy Harp- Seal keyhole in Neverland. Peter will give it to you
Lady Luck- Activate white trinity in Wonderland
Olympia- Beat the Hercules cup and you will receive it
Metal Chocobo- Beat cloud in the Hercules cup
Oathkeeper- Talk to Kairi in Traverse town after rescuing her
LionHeart- Beat Cloud and Leon in the Hades Cup
Divine Rose- Talk to Belle in the Library on your 2nd trip to Hollow Bastion
Oblivion- Open a chest in the Grand Hall in Hollow Bastion after sealing the Keyhole
Ultima Weapon- Synthesize all 24 items then the Ultima Weapon will be able to be 
Synthesized in the shop.

Donald- Staffs
Mage's Staff- Initial Weapon
Morning Star- Item shop 1st visit  (150 munny)
Warhammer- Item shop 1st visit  (250 munny)
Magus Staff- Item Shop after sealing Agrabah  (1000 munny)
Shooting Star- Item Shop after sealing Agrabah  (750 munny)
Silver Mallet- Item Shop after sealing Agrabah  (1000 munny)
Wisdom Staff- Item Shop after rescuing Kairi  (4000 munny)
Grand Mallet- Item Shop after rescuing Kairi  (4000 munny)
Wizards Relic- Find after defeating a Wizard (Hollow Bastion) there is a 0.2% of one 
appearing so equip lucky strike on Donald, Goofy and Sora.
Dream Rod- Find and revive all the summon gems and then talk to Merlin(Bambi, 
Dumbo, Genie, Simba, Mushu and TinkerBell.)
Violetta- Activate the white trinity in the collesium
Lord Fortune- Get all spells to their highest and talk to Merlin
Save The Queen(Donalds Ultimate Weapon)- Defeat the Hades Cup alone, only using 
Sora.

Goofy-Shileds
Knights Shield- Initial Weapon
Stout Shield- Item Shop 1st visit  (250 munny)
Smasher- Item Shop 1st visit  (250 munny)
Golem Shield- Item shop after sealing Agrabah  (1000 munny)
Mythril Shield- Item shop after sealing Agrabah  (750 munny)
Gigas Fist- Item shop after sealing Agrabah  (1000 munny)
Admant Shield- Item Shop after rescuing Kairi  (4000 munny)
Onyx Shield- Item Shop after rescuing Kairi  (2800 munny)
Dream Shield- Get all "ARTS" from the white mushroom sidequest and talk to merlin
Genji Shield- Defeat Yuffie in the Hades Cup
Herc's Shield- Defeat the Hercules Cup
Defender- Find after defeating a Defender (Hollow Bastion) there is a 0.2% of one 
appearing so equip lucky strike on Donald, Goofy and Sora. 
Save the King(Goofy's Ultimate Weapon)- Beat the Hades Cup in the Time Limit.

Easy Experience
If you want to level up as fast as possible when you are on Destiny Islands, the easy 
way is to challenge Wakka to a battle. Each time you strike a blitzball you receive 1 
experince points, each time you strike one of his fast balls you receive 2 experience 
points. Once he starts the battle do not auto target him, run so you are facing him 
staright and when he throws a blitzball run forward and hit it, by doing this the ball 
will fly past Wakka not hitting him. This means you can hit his blitzballs for as long 
as you choose without ending the battle. The highest I have received is 132 exp. From 
this process.