Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Defender of Foriys ( 20 points )	Win a Two-Headed Giant game.
Devastator ( 10 points )	Deal 20 combat damage to a player in a single turn in a game.
Duelist ( 10 points )	Win 5 ranked Xbox Live matches.
Duels Master ( 20 points )	Win 10 Xbox Live matches.
Epic Conclusion ( 40 points )	Defeat Tezzeret in the final single-player campaign battle.
Life Preserver ( 10 points )	Increase your life total to 30 or more in single player, or 60 or more in Two-Headed Giant.
Magic: The Puzzling ( 10 points )	Complete a challenge.
Master of Artifice ( 10 points )	Defeat Tezzeret & Tezzeret in the cooperative campaign.
Planeswalker ( 30 points )	Unlock 100%.
Puzzling Master ( 20 points )	Complete all challenges.
Spellslinger ( 0 points )	Defeat someone who has earned the Spellslinger achievement.
The Spark ( 20 points )	Win a game.