Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Almost Dead, Be Alert!	Be on your last life.	110
Cruising, Collecting Lives	Collected four Lives.	110
Game Over (until you try again...)	Got a Game Over.	80
Gaming Like a Boss!	One Boss Defeated.	100
Halfway Home	Four Bosses Defeated.	100
Hat Trick!	Three Bosses Defeated.	100
High Five!	Collected five Lives.	110
Robot Rejuvenation!	Obtained a Health Upgrade.	95
Two Bosses Are Better Than 1	Two Bosses Defeated.	100
Welcome to the Gun Show!	Obtained a Weapon Upgrade.	95