Here is the full list of all 49 WORLD OF FINAL FANTASY achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Obtained every achievement.
Mastered 100 Mirage Boards.
Recorded every last Mirage in the Mirage Manual.
Fulfilled the requests of every last townsperson in need.
Defeated the Undead Princess 10 times.
Defeated the Princess Goblin with the Warrior of Light.
Defeated every last opponent in the Coliseum.
Defeated 30 teams at the Coliseum.
Defeated the Cogna known as XG.
Opened every last treasure chest.
Braved and completed the new dungeons that appeared.
Recorded an inconceivable number of Mirages in the Mirage Manual.
Found the secret area in every dungeon.
Reached the true ending.
Defeated Ultros in Tometown.
Completed every last intervention battle.
Teamed up with Gilgamesh to stop the Bahamutian soldier.
Chastised the fugitive Ifreeta.
Completed 30 intervention battles.
Added Tamamohimé to your roster.
Got to the bottom of the “phenomenon” at the Coliseum.
Joined forces with Shivalry to defeat the Golden Flan.
Brought all seven of the Pleiad back in line.
Obtained every last Champion Medal.
Reached an ending.
Mastered your first Mirage Board.
Cleared the sky of uncountable einhänders.
Learned the location of Castle Exnine.
Thwacked a whole bunch of cactuars in a single thrashing.
Completed 10 intervention battles.
Reached the final chamber of the Nether Nebula in record time.
Defeated many foes using any Magitek armor.
Defeated every last murkrift Mirage.
Found all of the keys from the Crimson Prophecy.
Defeated the Quacho Queen with one of Lann’s attacks.
Recorded a huge number of Mirages in the Mirage Manual.
Found the first key from the Crimson Prophecy.
Opened 100 treasure chests.
Recorded a large number of Mirages in the Mirage Manual.
Battled 500 times.
Defeated your first murkrift Mirage.
Obtained your first Champion Medal.
Completed your first intervention battle.
Fulfilled a townsperson’s request for the first time.
Won your first Coliseum battle.
Repelled the Bahamutian Army.
Battled 100 times.
Imprismed your first Mirage.
Arrived in Grymoire.