Record score Achievement
The score has been posted to the online rankings.
Play the game on Original mode, with any settings, and set a high score. When you get to the game over screen, as long as you get on the high score board, you will get this. The lowest score is really low, you probably get this even if you only kill the first few enemies. The game will ask you if you want to upload your high score. Press and your achievement will pop.