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