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