Here is the full list of all 9 Masquerade of Miasma achievements.
Popped 20 Virus Streak
Popped 50 Virus Streak
Popped 100 Virus Streak
Popped 200 Virus Streak
Popped all Viruses
Never Touched a Doctor
Never washed your hands
Thank you for washing your hands!
Doctor catches, and uses, falling toilet paper