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