Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Dragon Slayer ( 20 points )	Defeat Nicol Bolas in the single player campaign ( Duel the Dragon).
Overkill ( 15 points )	Control creatures with a total power of 75 or more ( Duel the Dragon).
Puzzling Grandmaster ( 15 points )	Earn Puzzling Master and complete all Duel the Dragon expansion challenges.