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