Hack your way to global anarchyĪs for cheats, there are a few available within the game already, but only after you’ve completed stages on on Brutal. Total organ failure and coma are good destinations on the Symptoms tree, while Extreme Bioaerosol will make sure the disease can keep moving around by plane and boat regardless of technological improvements. Those abilities will get consummately more expensive if you spread out your upgrades among multiple paths. That said, figure out which high-level abilities you want, and make a beeline for it.
The price of all disease upgrades go up as you purchase others with DNA points.