Here is the full list of all 13 Broken Pieces achievements worth 1,000 gamerscore.
Restore the additional generator in Saint Exil
Finish Broken Pieces main story
Finish Broken Pieces in less than 5 in game days
Get levans key without getting close to the bird
Find all souvenir items
Finish all of george's tables in Saint Exil
Find the submarine on the beach
Complete all the dream portals
Obtain all the game's tapes
Solve the teleporting furniture's puzzle
Uncover the Devoted secrets
Reach the assomption church
Send a signal via the communication system in the lighthouse