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