This is done in the puzzle with the twins.
There are two possible ways of getting this achievement!
1. When you have gained the lockpick, you have to open the little room on the right side (I think it's between floors 2 and 3), where there is an open fire, a comfortable chair and a book shelf. Just press
X two times in front of the shelf, thus breaking it, getting the achievement and getting another artwork.
2. You could also get it by jumping on the parents' bed (2nd floor, right by the dumbwaiter, where you find the chamber pot) (thanks to
SuperTigerWoods for his tip on this one)