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