Complete the following achievements to unlock Microsoft Gamerscore points.

Trophy	How to unlock
Baby (10 points)	Complete Tutorial to unlock.
Blackout (10 points)	Complete level 4 to unlock.
Bronze Medal (50 points)	Win the game in easy to unlock.
Contact (60 points)	Complete level 7 to unlock.
Countdown (40 points)	Complete level 6 to unlock.
Endurance (80 points)	Play the game 5 hours to unlock.
Gold Medal (170 points)	Win the game in hard to unlock.
Hunter (20 points)	kill 100 aerial enemies.
Killer (40 points)	Kill 50 tanks to unlock.
Life Collector (45 points)	Collect 10 lives to unlock.
Presentation Card (20 points)	Complete level 1 to unlock.
Racer (60 points)	Complete level 1 in less that 4 minutes.
Sabotage (10 points)	Complete level 5 to unlock.
Shield (40 points)	Destroy 500 missiles to unlock.
Silver Medal (100 points)	Win the game in normal to unlock.
Survivor (80 points)	Complete level 5 without losing a life.
Sylas' Revenge (10 points)	Complete level 3 to unlock.
The Last Snowflake (10 points)	Complete level 2 to unlock.
Traveller (30 points)	Travel 100 kilometers to unlock.
Weapon Collector (60 points)	Collect 50 Homing missiles to unlock.
Zombie (55 points)	Die 50 times to unlock.