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