Brainzzz is an achievement for the Walking Dead symptom combo. How to get this achievement? Combine the Tier 1 symptoms Insomnia and Anaemia. It slows the Cure by making scientists less productive. Retrieved from "https://plagueinc.fandom.com/wiki/Brainzzzz?oldid=58905" Categories: Achievements Symptom Combos Community content is available under CC-BY-SA unless otherwise noted.