Unlockables
When you successfully complete ALL modes (Bacteria through Bio-Weapon) under the Brutal difficulty setting the 'No Cure', 'No Action' and 'Infinite DNA' options will become unlocked.
Bio-Weapon Mode:
Complete Nano-Virus under the Normal or Brutal difficulty setting.
Fungus Mode:
Complete Virus under the Normal or Brutal difficulty setting.
Nano-Virus Mode:
Complete Prion under the Normal or Brutal difficulty setting.
Parasite Mode:
Complete Fungus under the Normal or Brutal difficulty setting.
Prion Mode:
Complete Parasite under the Normal or Brutal difficulty setting.
Virus Mode:
Complete Bacteria under the Normal or Brutal difficulty setting.
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