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