Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Aquatic Laser Show (75 points)	Activate the Deeplight.
Feast for a Queen (100 points)	Feed the Queen Leviathan.
Gearhead (200 points)	Purchase all upgrades.
Merryn and Goliath (100 points)	Kill a Tremorclaw Crab as Merryn.
Poor Turtles (100 points)	Defeat the Fomori Boss.
Rest in Pieces (50 points)	Pay your respects to the Watcher and drop a flower on her final resting place.
Sea Saver (200 points)	Destroy the Forbidden City forever.
The Inner Sanctum (75 points)	Commune with the giant seahorse.
The Last Merrow (50 points)	Meet the Merrow.
Your Watch is Over (50 points)	Defeat the Watcher.