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