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