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