Note For Hexic (Windows) players: If you have already done this requirement on the windows 8 version of the game, this is glitched on the windows phone version.
Additional note For Hexic (Windows) players: There is a work around. Delete the game, redownload. Do NOT load the game yet. Set your phone to flight mode, load the game up, perform the requirement, and the achievement will unlock on your phone. However, it won't automatically update to xbox.com. Once you have popped the achievement, return to the start/home screen of your phone, and turn flight mode off. Then go to your 'games' app, where you can see your profile. When you see it, click on the pop-up menu at the bottom of your phone, and click 'refresh'. The achievement will now upload to xbox.com.