Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Addicted to destruction	Complete the game on any difficulty setting two times in a row.	80
Arachnophobic	Destroy level-4 boss.	15
Band of followers	Gather ten walkers on the screen on level-6.	15
Collector	Collect all power-ups in the game including all hidden power-ups.	30
Cyborg for dinner	Destroy level-4 miniboss.	15
Disturbed symbiosis	Destroy level-5 boss.	15
Empty shell	Destroy level-6 boss.	15
Explorer	Find all hidden power-ups.	30
Extended existence	Earn an extra life.	15
Eye surgery	Destroy level-1 boss.	15
Flesh and bones	Start the game as human.	15
Freedom to crawlers	Don't kill the crawlers on level-2.	15
Godlike	Complete the game on any difficulty setting with no deaths.	90
Good listener	Listen all tracks in music test menu (complete the game on 'Normal' difficulty to unlock it)	15
Gunslinger	Complete the game on any difficulty setting using only default weapon.	90
Heart attack	Destroy level-2 boss.	15
Heavy lifting	Don't kill the tongue climbers at the elevator on level-7.	15
Hero for ages	Complete the game on 'Normal' difficulty.	30
Inhuman	Complete the game on 'Hard' difficulty.	70
Insect control	Destroy level-3 boss.	15
Intestinator	Destroy level-5 miniboss.	15
Life stealer	Steal a life from other player in coop mode.	10
Out of misery	Destroy level-3 miniboss.	15
Real power	Use maximum charged fire for all weapons.	15
Savior of the universe	Complete the game on 'Easy' difficulty.	30
Seasoned	Earn 500000 score.	90
Sharpshooter	Kill ten enemies with one shot.	30
Squashed	Get squashed by the roof during the final boss encounter.	15
Super deadman	Die hundred times.	10
Survival of the fittest	Destroy level-7 boss.	15
The ultimate team	Complete the game on any difficulty setting in coop mode.	30
Total devastation	Destroy level-7 final boss.	20
Ultra Ultimate Super Cyborg	Complete the game on 'Hard' difficulty with no deaths.	90