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