My greatest video game achievement goes back a long time. I had a neighbor that was a super nerd and would defeat me at any game we played, even the ones that I thought i was "king" at. One day, playing Alien Crush on TG-16 I destroyed his top score by something like 50%. It was just a very lucky day for me.

Later and I had moved to another city when i got a Polaroid photo in the mail of my score being defeated. It took this "master" over a year to beat my score and that was my greatest accomplishment because this guy was "next level" when it came to gaming and likely still is.