Prestige Master within the very first month of the games release. I took part in the race lol and all on my own no help did it in under a month(roughly 27-28 days it took). I played for about 10 hours a day and like 16 on weekends. I was rank 1399 in the world once I hit prestige master. Surprisingly I never got bored of the game. I was able to play it the whole year straight and Blops 2 goes down as my favorite game of all time EDIT: also was shotgun rank in Zombies with blue eyes lol. I played so much black ops 2