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