Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Alligator Jack (20 points)	Killed all alligators on Treasure Isle.
Exterminator (30 points)	Killed all gargoyles and gave their eggs to Eldric.
Grave Robber (20 points)	Opened every deadly chest once.
Long John Silver (10 points)	Set course for Treasure Isle for the first time.
Robinson Crusoe (10 points)	'The Marooned Sailor' completed.
Templar (10 points)	'The Air Temple' completed.