Full list of all 12 OMG: Our Manic Game achievements worth 200 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Windows Phone.
Get close to enemies to kill them.
Play, play, play.
Try to survive for 8 minutes!
Touch all bosses in a game.
Clean 5 waves in a row!
Move a lot!
Improve your laser beam by defeating waves without dying.
Play a lot!
Send enemies crazy then kill them as late as you can.
Find a safe spot and stay idle.
Shoot at enemies without killing them, then kill them all in a row.
Just don't get killed!