Sterlino!
What a beautiful mission. So well planned and outworked. Mille mille grazie! It's such a pleasure to play that misson. There are so many hints overall, I just had to pay close attention to the details.
But now I am searching for the last secret. This is what I found so far:
1 At the inn room, lever under bed
2 Gas Conduct, lever on loose brick
3 Gas Zone Building, button in shaft
4 Gas Zone Building, upper guard room, behind banner
5 Switch to open grate to sewers in house with debris
6 Apartment above weapons shop
7 Church, lever in water bassin
8 Entry to Dr. Feather's study
9 Bank, in office on first floor
10 Bank, crushing the floor panel with the "x"
11 Northern sewer corridors, note about pigs
12 Northern sewer corridors, entrance to Villa
13 At the south side of main square (where the pub is), above stone bows; Pig 1
14 Ledge above pipe to gas zone; Pig 2
15 Balcony high above fountain
I've also found the other 2 pigs (one in bank vault, the other on a ledge in the area of Colette's Rooms).
Could you please give me a hint for the last missing secret? Please, please ...
Greetings
Urumo