Here is the full list of all 58 World of Final Fantasy Maxima achievements worth 1,000 gamerscore.
Obtained every achievement.
Reached an ending.
Reached the true ending.
Arrived in Grymoire.
Repelled the Bahamutian Army.
Found the first key from the Crimson Prophecy.
Found all of the keys from the Crimson Prophecy.
Learned the location of Castle Exnine.
Imprismed your first Mirage.
Recorded a large number of Mirages in the Mirage Manual.
Recorded a huge number of Mirages in the Mirage Manual.
Recorded an inconceivable number of Mirages in the Mirage Manual.
Recorded every last Mirage in the Mirage Manual.
Mastered your first Mirage Board.
Mastered 100 Mirage Boards.
Obtained your first Champion Medal.
Obtained every last Champion Medal.
Battled 100 times.
Battled 500 times.
Opened 100 treasure chests.
Opened every last treasure chest.
Defeated your first murkrift Mirage.
Defeated every last murkrift Mirage.
Found the secret area in every dungeon.
Completed your first intervention battle.
Completed 10 intervention battles.
Completed 30 intervention battles.
Completed every last intervention battle.
Fulfilled a townsperson’s request for the first time.
Fulfilled the requests of every last townsperson in need.
Joined forces with Shivalry to defeat the Golden Flan.
Chastised the fugitive Ifreeta.
Got to the bottom of the “phenomenon” at the Coliseum.
Defeated Ultros in Tometown.
Teamed up with Gilgamesh to stop the Bahamutian soldier.
Brought all seven of the Pleiad back in line.
Added Tamamohimé to your roster.
Defeated the Quacho Queen with one of Lann’s attacks.
Defeated the Undead Princess 10 times.
Defeated the Princess Goblin using the Warrior of Light's Champion Medal.
Won your first Coliseum battle.
Defeated 30 teams at the Coliseum.
Defeated every last opponent in the Coliseum.
Braved and completed the new dungeons that appeared.
Defeated the Cogna known as XG.
Won many times in Sandstalker.
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.
Fished up Leviathan.
Impressed Enna Kros.
Acquired your first Champion Jewel.
Acquired all Champion Jewels.
Defeated the Immortal Dark Dragon.
Defeated the enhanced Brandelis.
Cleared your first Time Attack in the Coliseum.
Cleared all Time Attacks in the Coliseum.