Here is the full list of all 50 Star Ocean: The Last Hope achievements worth 1,000 gamerscore.
Viewed Crowe's ending sequence.
Viewed Sarah's ending sequence.
Viewed Meracle's ending sequence.
Viewed Lymle's ending sequence.
Viewed Arumat's ending sequence.
Viewed Myuria's ending sequence.
Viewed Bacchus's ending sequence.
Completed the game on the Universe difficulty level.
Viewed Faize's ending sequence.
Viewed Reimi's ending sequence.
Collected 100% of all monster data.
Took over the top spot in solo or team battle rankings.
Created 80% of all possible items.
Defeated the Ethereal Queen.
Obtained 60% of all battle trophies.
Completed 100% of all quests.
Obtained 50% of all battle trophies.
Defeated Gabriel Celeste.
Collected 100% of all spaceship data.
Broke into the top 10 in solo or team battle rankings.
Obtained 40% of all battle trophies.
Created 60% of all possible items.
Created 40% of all possible items.
Broke into the top 30 in solo or team battle rankings.
Obtained 30% of all battle trophies.
Defeated Satanail in the Palace of Creation on Nox Obscurus.
Obtained 20% of all battle trophies.
Completed 60% of all quests.
Created 20% of all possible items.
Defeated Kokabiel and her spawn in the sacred En II Sanctuary.
Collected 50% of all monster data.
Completed 30% of all quests.
Defeated Armaros Manifest in the grimy depths of the Miga Insect Warren.
Opened 50% of all treasure chests.
Defeated Tamiel and his Sydonaist henchmen in the hallowed halls of the Purgatorium.
Obtained 10% of all battle trophies.
Narrowly escaped from the alternate Earth before its untimely demise...
Defeated Sahariel in the Cardianon control tower's central isolation chamber.
Defeated Barachiel in the engine room of the celestial ship.
Defeated Armaros on the northern coast of Aeos.
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Obtain 70% of all battle trophies.
Obtain 80% of all battle trophies.
Obtain 90% of all battle trophies.
Obtain 100% of all battle trophies.
Collect 100% of all weapon data.
Create 100% of all possible items.
Open 100% of all treasure chests.