How to Unlock Nemesis

Nemesis is the possibly the hardest monster in the entire game. To acquire the challenge to take on this foe you must:

1. Capture 10 (ten) of every monster in all areas.
2. Defeat every normal monster in every area in the arena.
3. Defeat all of the created monsters in Species/Area Conquest and Original.

After accomplishing these tasks the arena owner creates Nemesis. Be prepared this son of a gun is hard.

Ultimate Weapons

Here is a list of where to find everything.

Tidus

Weapon - Top Sector of Calm Lands, in a tiny little path, must beat Chocobo Trainer to obtain.

Crest - Area where you fight Yunalesca

Sigil - Get time of 0:00 on Chocobo Race

Yuna

Weapon - Monster Arena, catch one of every fiend in Calm Lands

Crest - Besaid, in small alcove in water where you first meet Wakka

Sigil - Defeat all of Belgemines Aeons

Wakka

Weapon - Win 5 Blitzball matches, talk to Bartender in Bar at Luca

Crest - Locker in Aurochs locker room

Sigil - Random Blitzball Prize

Auron

Weapon - Put Rusty Sword into Statue on road near the command center

Crest - Oldroad, very beginning

Sigil - Unlock 10 Area/Species Creations in Monster Arena

Rikku

Weapon - Enter password "GODHAND" into Airship

Crest - Sand trap in Sanubia Sands

Sigil - Do Cactuar minigame in Sanubia Sands, in Sandstorm area

Lulu

Weapon - Outside of Baaj Temple, keep pressing X as Chest is hidden

Crest - Farplane, return a second time

Sigil - Dodge 200 Lightning Bolts consecutively, outside of travel agency

Kimahri

Weapon - Pray to 3 Qactuar Stones in Thunder Planes

Crest - Entrance to Gagazet, near pillar

Sigil - Defeat Butterfly Minigame

To obtain any of the Weapons, you must have the Celestial Mirror, which is obtained by...

Beat Chocobo in race at Remiem Temple. Obtain Cloudy Mirror. Go to Macalania Forest. Talk to mother/son multiple times, then go right to find the father, go back, talk multiple times, then go up the Shiny Path, to find son, he will upgrade mirror to Celestial. This is also where you will upgrade all of the weapons with crests/sigils.

Millions of AP

Be able to fight the one-eye at the monster arena. When you overkill it you will sometimes get some triple overdrive weapon with 3 empty slots in them. Then customize overdrive-AP and triple AP + Double AP. Then fight dark ixion at the thunderplains. all your carachters have to have auto-Phenix customized on their armor. Or else dark ixion wil kill you at once. Let everybodys overdrive charge in STOIC Modus. (Overdrive increase when hit by a monster) when you charge Ixion probably will damage 99.999 in every attack. You then will get 99.999 times 3 times 2 This will probably come around 600.000 Ap on each attack. I used this method to go all the way around the sphere grid with all my characters. Good luck...

Get Yoyimbo

Go to the cavern of the stolen faith and you will encounter a dead summoner who calls Yojimbo. Beat him and continue on to the teleport pad. Choose to travel to the chamber of Fyth and Yojimbo will ask you why you seek his services. You must answer, "To defeat the most powerful of enemies."

Yojimbo will then ask 250,000 gil for his services. Offer him half of that amount but add one gil more. So if he asks 250,000 offer 125,001 instead. Then do the same until he asks 205,000. When he asks 205,000 offer 200,000 and he will most likely accept the offer. You can offer the full 205,000 gil to hire him for sure, but if you don't mind losing an extra 5,000 gil.