Here is the full list of all 35 The Infectious Madness of Doctor Dekker achievements.
Solved in six
Solved in five
Solved in four
Excellent hint usage.
Solved in three
Zero hints, and you absolutely didn't cheat at all.
Solved in two
Solved in one
You made Nathan sing a song.
Two hundred insanity points reached
One thousand responses revealed!
One hundred and fifty insanity points reached
Two thousand questions asked!
One hundred insanity points reached
Seven hundred and fifty responses revealed!
Eight hours played
Five hundred responses revealed!
One thousand questions asked!
Four hours played
Fifty insanity points reached
Two hundred and fifty responses revealed!
Five hundred questions asked!
Two hours played
One hundred responses revealed!
Two hundred and fifty questions asked!
One hundred questions asked!
Twenty questions - well done!
Ten responses revealed!
Three thousand questions asked!
Sixteen hours played
Twenty hours played
Twenty five hours played
Three hundred insanity points reached
Five hundred insanity points reached
It's a bit hinty in here.