I finally, FINALLY beat XCOM: Enemy Unknown/Within. It only took me five tries spread out over several years. Also, the ending cutscene kept crashing on me and for a bit there I thought I wasn't going to be able to get the achievement for beating it. Not funny, Firaxis. Fortunately, verifying the files solved that problem.
The ending sucked, by the way. After all that trouble I expect to see people throwing parades in my honor, or at least for someone to tell me I did a good job defending the entire human race. Nope, nothing.