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