Full list of all 20 The Whispered World Special Edition achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
This is the optimal solution.
Solve the slider puzzle without skipping.
I don't like minigames!
Solve the tube puzzle without skipping.
Lear the Leave Spot Form!
Finish Chapter 3!
There still isn't any soup!
Directly open the door.
Finish Chapter 2!
Lear the Five Spot Form!
Solve the chess puzzle without skipping.
Finish Chapter 1!
Learn the Fire Spot Form!
Figure out the correct time on your own!
If Sadwick will ever find the right way to Shana?
Finish Chapter 4!
There must be an alternative ending!
Learn the Ball Spot Form!
Unlock the secret honking-shoe-mode!
How often do you have to transform spot?!