Anytime I play a Final Fantasy game, I get this urge to collect everyone's best weapon, all summons, fight the biggest boss, etc. Playing through this again on the PSP has revived the quest for me, and as popular as the game is, it's hard to find all this info in one place. So here it is:
ULTIMATE WEAPONS:
Cloud, Ultima Weapon: Reward for defeating "Ultima Weapon" boss.
Barret, Missing Score: *One time opportunity!* Towards the end of Disc 2, during the raid on Midgar (after parachuting in), Missing Score will be in the chest on the stairs ONLY IF HE IS IN THE PARTY.
Tifa, Premium Heart: On Disc 2, return to Don Corneo's mansion in Midgar slums. Examine the computer in the corner with the machine gun head.
Aeris, Princess Guard: *One time opportunity!* During Disc 1, in the Ancient's Temple, arrange the hands on the clock in the Clock Room to walk over to the Door IIII. Inside is a chest containing the weapon.
Red XIII, Limited Moon: After the WEAPONs attack during Disc 2, return to Cosmo Canyon and talk to Bugenhagen in the Observatory.
Cait Sith, Marvelous Cheer: *One time opportunity!*On Disc 2, during the raid on Midgar (after you parachute in), enter the Shinra Building and return to the 60-level rooms. Check the lockers.
Cid, Venus Gospel: After launching into space from Rocket Town in Disc 2, return to Rocket Town and talk to the Old Man adoring the rocket 3 times.
Yuffie, Conformer: During Disc 2 or 3, use the submarine to find the Sunken Gelinka, the weapon is in a chest.
Vincent, Death Penalty: *MUST BE DONE ON DISC 2 AND 3!* On Disc 2, find the Key of the Ancients in an underwater cave using the submarine (this is required by the main quest anyway). From the cave entrance, hug the west wall going south until you reach another opening, a narrow passage and then a left. Surface when you reach the open area and you'll be near a waterfall. Land the sub, and WITH VINCENT IN THE PARTY enter the cave behind it and talk with Lucrecia. On Disc 3, return to the cave and talk with her once more.
SUMMONS:
Alexander: The Great Glacier, after touching the hot springs go east into the rotating snowfield (the glacier should be to your south) and reach a hidden cave. Defeat Snow.
Bahamut: Temple of the Ancients, after killing the Red Dragon.
Bahamut ZERO: Cosmo Canyon, after completing the Huge Materia side quest. Ride with Bugenhagen to the observation room and examine the materia there.
Choco/Mog: Chocobo Ranch, talk to the chocobo nearest the fence, and choose to 'Wark'.
Hades: The suken Gelinka airship, obtainable after you have the sub.
Ifrit: Cargo Ship, on the floor after defeating Jenova-BIRTH.
Knights of the Round: Top-right isolated island of the map, obtainable only with a golden chocobo.
Kujata: Sleeping Forest, on the ground shortly after entering.
Leviathan: Wutai, reward for completing the Pagoda battle challenge with Yuffie.
Neo Bahamut: Whirlwind Maze, near save point.
Odin: Nibelheim, Shinra Mansion, found in the safe after defeating Lost Number. (Code is Right 36, Left 10, Right 59, Right 97; cannot pass the number or it will fail)
Pheonix: Fort Condor, reward for successfully defending the egg.
Ramuh: Gold Saucer, Chocobo Square, in Jockey's Room MUST BE ACQUIRED AFTER DESERT PRISON EVENT.
Shiva: Junon, reward for saving Priscilla.
Titan: Gongaga, ruined reactor, inspect the same location Scarlet was examining.
Typhon: Ancient Forest.
More soon!
