Still made some mistakes, though. 1.) Buying the special infection features is most important, high speed is essential too, then infection chance. 2.) Don't spend too much money on Life Span and Attack, you definitely won't need more than 14 in both. 3.) Always have some grenades in reserve to kill lone survivors, but otherwise don't waste your cash on them. 4.) Don't upgrade the heroes to Level 5 or 6, unless you really can afford it. 5.) Instead, try to acquire new heroes as soon as you can take them, they really have an impact. If you take these advices to heart, you will be able to make the in game in far less than 160 days.
KEEP THIS COMMENT ALIVE!! MJ - Destroy the grave in Jamaica (Mexico) Tank- kill Rambo in Qandahar (Middle East) Boomer Santa- Kill Santa in Nuunok (Greenland) Col.Sanders- Kill him in Kentucky (America) Ronald McDonald- Kill him in London (Europe)[also found in multiple other places] Venom - Kill Spider man in New York (America)
 "Async Racing"){kind=icon}
 "Caesary"){kind=icon}
 "Cover Orange Players Pack"){kind=icon}
 "The Final Death Wish"){kind=icon}
 "Rock 'n' Risk"){kind=icon}
 "Robot Wants Puppy"){kind=icon}
 "Homerun In Berzerk Land: Berzerk Ball"){kind=icon}
 "Great Game 1/5"){kind=icon}
 "Interactive Buddy"){kind=icon}
 "Neon Rider"){kind=icon}
 "Z-Rox"){kind=icon}
 "Infectonator : World Dominator"){kind=icon}