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