To unlock Xbox Live Gamerscore points, complete one of the following Achievements.

Achievement	How to unlock
Ancient Depths ( 15 points )	Defeated Kiora in the Single-Player Campaign.
Evil's End ( 25 points )	Completed the Archenemy campaign.
Final Exam ( 30 points )	Defeated Karn in a campaign game.
Gather Your Allies ( 15 points )	Hosted an Archenemy match on Xbox LIVE with two human teammates.
Magic: The Puzzling ( 10 points )	Solved a Challenge.
Metalcraft ( 10 points )	Controlled three artifacts in a game.
Mythic ( 10 points )	Cast a Mythic rare spell in a game.
Puzzling Master ( 10 points )	Solved Fifteen Challenges.
Strength of Stone ( 10 points )	Defeated Koth in the Single-Player Campaign.
Unquenchable Fire ( 20 points )	Defeated Chandra in the Single-Player Campaign.
Wielding Steel ( 25 points )	Defeated Gideon in the Single-Player Campaign.
You'll Never Get Away With It ( 20 points )	Defeated an Archenemy in a game.