Here is the full list of all 85 Final Fantasy IX achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Complete FINAL FANTASY IX.
Obtain the Gastro Fork.
Successfully catch 99 frogs.
Successfully catch a golden frog.
Defeat Lich, the Guardian of Earth.
Obtain the Mace of Zeus.
Defeat Kraken, the Guardian of Water.
Use White Magic spells 200 times.
Defeat Tiamat, the Guardian of Wind.
Obtain the Rune Claws.
Obtain the Angel Flute.
Defeat Maliris, the Guardian of Fire.
Obtain the Tower.
Obtain Kain's Lance.
Uncover the secret of the Eidolon Wall.
Obtain the sacred blade Excalibur.
Win 10 items at the Treno Auction House.
Cause Moguo to have a tantrum.
Visit every beach in Gaia.
Obtain the Hammer.
Receive 10 rewards from Queen Stella.
Repair the machine at Mognet Central.
Obtain a bottle of Superslick.
Purchase all items available from Stiltzkin.
Obtain 4 moonstones.
Obtain the Ultima Weapon.
Use Black Magic spells 100 times.
Enter trance 50 times.
Receive certification as a Rank S Treasure Hunter.
Gain the favor of all friendly enemies.
Locate all hidden treasures on the world map.
Obtain the complete set of Genji armor.
Correctly answer all the questions in Ragtime Mouse's pop quiz.
Obtain an airship.
Obtain the Tiger Racket.
Obtain the Whale Whisker.
Obtain a miniature copy of the Prima Vista.
Win a Tetra Master match.
Beat the Nero Brothers' shuffling game nine times in a row.
Obtain Athlete Queen.
Summon the eidolon Fenrir.
Use the Defend command 50 times.
Free Kuppo from a wall in Fossil Roo.
Obtain Madain's Ring via mining.
Synthesize 10 items.
Guide all the residents of Cleyra to safety.
Use the Steal command 50 times.
Defeat 100 enemies.
Enter Trance for the first time.
Have the nobles demand an encore.
Synthesize 30 items.
Use Blue Magic spells 100 times.
Summon Eidolons 50 times.
Defeat 1000 enemies.
Defeat 10000 enemies.
Acquire all available support abilities.
Raise your chocobo's beak level to 99.
Defeat Ozma.
Defeat Behemoth in the Treno weapon shop using Dagger.
Jump rope 1000 times without tripping and obtain King of Jump Rope.
Jump rope 100 times without tripping.
Win with Vivi during the Festival of the Hunt.
Attain level 99 with at least one character.
Play the blackjack minigame.
Win 10 Tetra Master matches.(Certain NPCs can be re-challenged to increase your win count after progressing through the game.)
Win 100 Tetra Master matches. (Certain NPCs can be re-challenged to increase your win count after progressing through the game.)
Receive 30 back attacks.
Form a party with Quina Quen and three female characters.
Form a party with four male characters.
Have a single character affected by all status ailments. (both beneficial and detrimental).
Activate the Rebirth Flame ability when all party members are incapacitated.
Summon the eidolon Shiva.
Summon the eidolon Ifrit.
Summon the eidolon Ramuh.
Summon the eidolon Atomos.
Summon the eidolon Odin.
Summon the eidolon Leviathan.
Summon the eidolon Bahamut.
Summon the eidolon Ark.
Summon the eidolon Carbuncle.
Summon the eidolon Phoenix.
Summon the eidolon Madeen.
View 79 Active Time Events.
Obtain Excalibur II.
Receive a Very Good Omen from a color fortune.