Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Aaaand Still Alive	Complete the epic difficulty.	0
Air support	Defend the first camp.	100
Alive	Complete the normal difficulty.	0
Chopper Captain	Buy your first helicopter.	100
Colorized	Repaint a helicopter.	0
Defeated! Again...	Defeat the first boss.	100
Escort Agency	Escort the first convoy.	100
Knight	Defeat 500 zombies.	0
Looter	Transport a supply to your base.	100
Man at arms	Defeat 100 zombies.	0
Mechanic	Upgrade a helicopter.	0
Paladin	Defeat 1000 zombies.	0
Scrap them all	Buy all helicopters.	100
Search and Rescue	Save the first survivor.	100
Still Alive	Complete the hard difficulty.	0
This is a beginning...	Hire your first shooter.	100
Trainer	Upgrade a shooter.	100
Tuner	Own a fully upgraded helicopter.	0
Veteran Z	Own a veteran shooter.	100
Veteran paint job	Collect a special paint job.	0