Complete one of the following achievements to collect their Xbox Live Gamerscore points:
Unlockable: --- How to Unlock:
20 Miles Out (75 GP) --- Drive the distance home.
70 out of 100 (75 GP) --- Look through Kelly's photography final.
By Benji (75 GP) --- Read all of Ben's stories.
Canon (75 GP) --- How it really happened.
Home (200 GP) --- Finish main story, epilogue, and all extras.
On the Radio (100 GP) --- Listen to all of the songs on the radio.
Three Times Around (75 GP) --- Take a walk.
Until Next Time (125 GP) --- Complete the epilogue.
We'll All Sit Down and Have a Talk (125 GP) --- Complete the main story.
Wrong Bus (75 GP) --- Get on the wrong bus.