Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
A Private with experience	Kill 100 enemies in one run.	100
A Sergeant with a temper	Kill 200 enemies in one run.	100
Ambulance	Pick up a health heart.	100
Battle-scarred	Kill 600 enemies in total.	200
Bloody hands	Kill 700 enemies in total.	200
Enough for retirement	Earn 350 coins in total.	200
I feel stronger	Pick up a positive artifact.	100
Investment	Pick up a negative artifact.	100
Killy Billy	Beat the Billy.	100
More savings	Earn 300 coins in total.	200
Savings	Earn 250 coins in total.	100
Shopping!	Make your first purchase.	100
Thick-skinned	Beat the Vinnie.	100
Time to get closer	Spend all the ammo.	200
Veteran	Kill 500 enemies in total.	100