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