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