Here is the full list of all 50 Star Ocean: The Last Hope achievements worth 1,000 gamerscore.
Obtained 30% of all battle trophies.
Collected 100% of all spaceship data.
Created 20% of all possible items.
Broke into the top 10 in solo or team battle rankings.
Earned 50 victories in class 100 bunny racing.
Completed 60% of all quests.
Broke into the top 30 in solo or team battle rankings.
Completed 30% of all quests.
Obtained 20% of all battle trophies.
Defeated Satanail in the Palace of Creation on Nox Obscurus.
Viewed Faize's ending sequence.
Viewed Crowe's ending sequence.
Viewed Reimi's ending sequence.
Viewed Arumat's ending sequence.
Viewed Myuria's ending sequence.
Viewed Sarah's ending sequence.
Viewed Meracle's ending sequence.
Viewed Bacchus's ending sequence.
Viewed Lymle's ending sequence.
Defeated Kokabiel and her spawn in the sacred En II Sanctuary.
Collected 50% of all monster data.
Defeated Armaros Manifest in the grimy depths of the Miga Insect Warren.
Opened 50% of all treasure chests.
Narrowly escaped from the alternate Earth before its untimely demise...
Defeated Tamiel and his Sydonaist henchmen in the hallowed halls of the Purgatorium.
Obtained 10% of all battle trophies.
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 40% of all battle trophies.
Obtain 50% of all battle trophies.
Obtain 60% of all battle trophies.
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.
Collect 100% of all monster data.
Create 40% of all possible items.
Create 60% of all possible items.
Create 80% of all possible items.
Create 100% of all possible items.
Open 100% of all treasure chests.
Complete 100% of all quests.