I beat the game and I didn't get the badge. I thought I might have been in easy so restarted in hard, have conquered half the map and it still doesn't say I've gotten any capitals.
Got My impossible badge. Started in Japan with a virus with an innate air vector. Bought 2 levels of heat, cold, and water resist. Bought sneezing, coughing and vomiting. Waited until about 400k people were infected then sold them. Madagascar was one of the first places infected, and as soon as everywhere else was, I bought 4 levels of drug resistance, coughing, vomiting, fever, diarrhea, and fatigue. Added more lethal symptoms as I got points. Killed everyone on day 85.
 "Feudalism II"){kind=icon}
 "Pandemic 2"){kind=icon}