1) Pick virus. 2) Start in Madagascar. If you do not start there, restart. 3) Sell starting symptoms, if ay, and buy snezzing. If you started with sneezing, do nothing. 4) Buy 1-1-1-0 resistances but not transmissions, because they trigger border/shipyard/etc... closures. 5)Once three countries are infected, sell sneezing to get rid of visibility. 6) Wait until all countries are infected. 7) Buy all four drug resistances, sneezing, coughing, and vomiting. 8) After a few days, unlock tiers 2 and 3, keeping whatever symptoms it gives you. 9) Buy fever, fatigue, diarreah, pulmonary edema, and hypersensitivity. 10) Wait until everyone dies. Congratulation, you just got the hard or maybe the impossible badge!
 "ZOMBIE"){kind=icon}
 "ImmorTall"){kind=icon}
 "Infectonator : Christmas Edition"){kind=icon}
 "Battalion: Arena"){kind=icon}
 "Infectonator!"){kind=icon}
 "zombie horde 3"){kind=icon}
 "Space Adventure (sorta...)"){kind=icon}
 "Cover Orange"){kind=icon}
 "SpiderX"){kind=icon}
 "Run"){kind=icon}
 "Pandemic 2"){kind=icon}