Full list of all 50 Final Fantasy IV: The After Years achievements. It takes around 120-150 hours to unlock all of the achievements on Windows.
Completed the Crystals.
Save up 500,000 gil.
Obtain all non-hidden Eidolons.
Save up 200,000 gil.
Obtained a piece of adamant armor.
Trade a rainbow tail for a Limit Ring.
Trade a green tail for a Rare Band.
Learn Dualcast.
Save up 50,000 gil.
Defeat 2,000 enemies.
Completed the Lunarians' Tale.
Complete 60% of the Bestiary.
Completed Kain's Tale.
Completed Edward's Tale.
Completed Porom's Tale
Completed Edge's Tale.
Defeat 1,000 enemies.
Completed Palom's Tale.
Complete 30% of the Bestiary.
Completed Yang's Tale.
Defeat 500 enemies.
Completed Rydia's Tale.
Raise a band ability to the maximum level.
Save up 10,000 gil.
Completed Ceodore's Tale.
Defeat 100 enemies.
Began Ceodore's Tale.
Trade a blue tail for Blue Armor.
Trade a red tail for a Level Band.
Trade a black tail for Twin Stars.
Trade a purple tail for Treasure Hunter V2.
Trade a white tail for a Rapid Ring V2.
Trade a gold tail for a Gil Band V2.
Trade a gray tail for a Reach Ring.
Trade an ebony tail for a Provoke Ring.
Trade a pink tail for Pink Armor.
Obtained Hero's Shield.
Obtained Ultima Weapon.
Obtained Ragnarok.
Obtain all Eidolons.
Learn 40 different band abilities.
Learn all band abilities.
Raise all band abilities to the maximum level.
Reach level 30 with all characters.
Reach level 50 with all characters.
Reach level 70 with all characters.
Complete 100% of a Tale's Bestiary.
Complete 100% of the Bestiary.
Collected every Lustful Lali-Ho.
Complete every achievement.