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