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