Full list of all 20 Z0MB1ES (on teh ph0ne) achievements worth 200 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Windows Phone.
Kill 10,000 "things."
Reach the end of the song in I MAED A GAM3.
Score one million in Endless Z0mb1es.
Get 20 kills with one laser shot in I MAED A GAM3.
Survive TWO rounds of Endless Z0mb1es.
Destroy the moon without dying in Time Viking.
Score one million in Time Viking.
Destroy the moon in Time Viking.
Build a 1,000 foot tower in Time Viking.
Score 100,000 in Time Viking.
Survive one round of Endless Z0mb1es.
Score 100,000 in Endless Z0mb1es.
Survive one room of Endless Z0mb1es.
Score one million in I MAED A GAM3.
Survive space without firing a shot in I MAED A GAM3.
Create a custom game sprite in Mega Games Creator 2000.
Don't move for a minute in I MAED A GAM3.
Kill 1,000 "things."
Score 100,000 in I MAED A GAM3.
Beat I MAED A GAM3 without dying once.