Mission 2: High Overseer Campbell
Sokolov Painting 2-1
Once you make your way through the Overseer’s mansion to the bottom floor, you will come to a door to the backyard to meet Samuel. Before going through there, look to the right of that door to find another that leads to the Kennels. Go through and follow the stairs to the bottom. In the corner here will be a bust of Holger. Press the eye on the bust and a door to the right of it will open revealing Campbell’s Secret Chamber. You can find the painting “The Isometry of High Overseer Thaddeus Campbell” on the right side a few steps after entering.