New game types such as Virus, Fungus, up to Bioweapon
You can unlock the next type by clearing the stage before it on Normal or Brutal difficulty.
| Unlockable | How to unlock
|
|---|
| - Beat Nano-Virus on Normal or Brutal.
|
| - Beat Virus on Normal or Brutal.
|
| - Beat Prion on Normal or Brutal.
|
| - Beat Fungus on Normal or Brutal.
|
| - Beat Parasite on Normal or Brutal.
|
| - Beat Bacteria on Normal or Brutal.
|
