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