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