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