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