What was the longest period of time between getting your first achievement on a game and getting the final achievement?
I ask because until today, Hexic was my reigning champ in this category. My first unlocked in Hexic was 4-15-07. I finished it on 7-21-08, a year, 3 months, and 6 days later. Tonight I finished History Channel Civil War, which I bought the day I got my 360. My first unlocked achievement was on 4-7-07. That means it was a whopping 2 years and 7 months from first to final achievement!
Does anyone out there have a gap longer than mine? Share your "Cold Case" completions!