Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Anthem (10 points)	Reach level 10 with any class.
Concerto (30 points)	Reach level 30 with any class.
Continuo (25 points)	Retrieve the Harp.
Elegy (25 points)	Retrieve the Accordion.
Finale (40 points)	Retrieve the Baton.
Harmony (25 points)	Retrieve the Bell.
Hymn (25 points)	Retrieve the Lyre.
Impromptu (25 points)	Retrieve the Sousaphone.
Orchestra (50 points)	Reach level 50 with any class.
Overture (10 points)	Complete the prologue.
Prelude (25 points)	Retrieve the Bagpipes.
Rondo (25 points)	Retrieve the Drum.
Symphony (25 points)	Retrieve the Violin.