Campaigns I've Beaten
It's a cold day in Hell when I beat a game's campaign. Usually distractions, boredom or rage keeps me from completing a game's main campaign, so those seldom occasions where I have need to be recorded for the list-worthy efforts they are!
Doesn't include completing DLC campaigns, side missions or 100%'ing a game - just the main storyline. Although I may very well have 100%'ed the game or done all the side missions!