I'm guessing there is a certain threshold that must be surpassed to get the High Score achieve, since I've submitted high scores but haven't gotten it yet. By the way, the arcade feel of the game is good. I would have sunk quarters into this back in the 80s. Update: It seems the new achievements aren't working either. I read through the manual a second time, got to level 3 and had already completed the tutorial days ago....