Fighting the Weapons:
Emerald Weapon-
Emerald Weapon can be fought on disc two. Just run into her with the submarine. All you have to do is drive the sub around underwater until you find her.
Before you fight her have the following.
Person 1
- Knights of the Round(mastered) or Master Summon linked to Mp Absorb
- W-Summon
Person 2
- Mime
Person 3
- Mime
- Fianl Attack(mastered) linked to Pheonix(mastered)
Anyone
- Underwater
- HP, MP, Magic Pluses
Person 1 should be your strongest magic user. Person two should be the weakest magic user. Person three should have the most life and defenses. The underwater matera is acheived when you morph a Ghost Ship found in the Underwater reactor tunnel with the glass walls. That materia will eliminate the 20 minute counter. Simply have Person 1 cast Knights of the Round twice. The other two just Mime it. If you are strong enough it will take about three rounds. If anyone dies, don't worry. Keep hitting her with Knights of the Round. Pheonix will revieve your charcters when the person with it dies.
Emerald has 1,000,000 Hp, 100 Mp, and gives you 50,000 Ap Xp and Gil. When it opens up It will bring out four Eyes that will drain your Hp and Mp. They have 25,000 Hp. You will get the Earth Harp when you win. Take it to the man in Kalm for a set of Magic, Command, and Summon materias.
Ruby Weapon-
To attack Ruby Weapon, fly into her head in the desert with Highwind. Before attacking her kill two caracters and give the remaining-Fianl Attack+Revive(level 2), W-Item, Knights of the Round(mastered), and Time. Use the Item Duplication trick to get 99 Dazers. Dazers are won from or stolen from the hedgehogs in the area before the Lost City. Wait for Ruby to insert her arms. then her her with two dazers. Cast haste on yourself. Hit her with dazers. Cast Knights of the round on her then her arms. She will draw back her arms. Hit her with dazers then Knights of the Round. Continue using dazers then Knights of thr Round until she dies.
Ruby Weapon has 1,000,000 Hp and the arm stalks have 50,000 Hp each. You will get the Desert Rose for winning which can be exchanged to the Kalm man for an ocean chocobo.
Diamon Weapon-
Diamond Weapon isn't much of a challenge. He has 50,000 Hp. You will fight Diamond Weapon after you use the Key of The Ancients in the City of the Ancients. After the battle you will procede to re-enter Midgar. The important thing to rmember is to steal from Diamond Weapon. He has a weapon for Yuffie with double materia raising capabilites called Rising Sun. Use magic more than attacking for it seems to work better. Winning gets you 35,000 Xp, 5000 Ap, and 35000 gil.
Ultimate Weapon-
You must fight Ultimate Weapon at least once in the game. You will fight him in Mideel after completing the first two huge materia events. He has 10,000 Hp. His attack, Ultima Beam, is very powerful so keep your Hp up. After winnning, Ultimate Weapon will fly off. You may follow him and battle him reapetedly. Each battle ends after one or two rounds and he flies off again. Chase him around the world in Highwind. When he stops over Cosmo Canyon, it will be the final battle. You won't have to damage him much, but he will cast the Enemy Skill Shadow Flare on whoever kills him.
Sapphire Weapon-
Sapphire Weapon is the only weapon which you cannot fight. He is the aquatic weapon that attacks Junon and is killed by Shin-Ra.