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