Runes
Purchase a Rune from the last black market shop in the game. It overlooks the harbor where you land.
Before entering Dunwall Tower, look for a building to the left. It’s filled with pipes and there are two Witches guarding it. Slip in through a tiny window and assassinate at least one of the Witches. When both are down, look for a cubby beside a walkway. Drop through the cubby and grab the Rune that’s hidden below it.
The security room is in the Dunwall Tower cellar; it’s at the back-right side of the building. Get down there and look on top of the pipes for a Rune.
While you’re in Dunwall Streets, look for a damaged building on the left (near the end of the road). Blink up through several exposed floors and kill a Witch up top. Cross the street using some beams, and clear out the apartment ahead. Turn a Barometer inside the apartment to open a secret door. An Outsider Shrine is within.
Bonecharms
Outside Dunwall Tower there is a Green House with three Witches. Deal with them and then look in a basket for a Bonecharm.
The waterlock is a building on the left side of the yards before you enter Dunwall Tower. Go all the way out toward it, using your Heart to detect the Bonecharm ahead. Sneak around the walkways to the right of the building and surprise two Witches when you jump over the wall beside them. Kill that pair and take the Bonecharm from a wooden box.
The High Overseer is in the Dunwall Tower entryway. Get a Bonecharm from him.
One Bonecharm is on the second floor of Dunwall Tower. Turn left from the main hallway and look for a room only a few feet away. Open the doors and kill the only Witch inside, then take the Bonecharm.
The other Bonecharm on the second floor of Dunwall Tower is harder to find. You see it inside the walls, but there isn’t a door leading to it. Instead, look for a small window in the wooden paneling. It’s almost at ceiling level. Blink/Far Reach up to that, and get into a secret room with your last Bonecharm.
Get the Outsider Shrine from this area and start from there. Get onto the pipes outside and go around the corner of the building. Use your Heart to spot the Black Bonecharm high above; take the pipes and rooftops to get closer to this target. Snipe or Sleep Dart a watchful Witch above you, and then Blink/Far Reach up to her level. The Black Bonecharm is inside her building, on a mattress higher up.
Enter Dunwall Tower and look in the entryway for the High Overseer. Take a Corrupt Bonecharm from him.
Paintings
Before entering Dunwall Tower, look for a gazebo. Once you find it, jump onto the wall to the left and snipe three Gravehounds in the yard below the gazebo. A Painting is down there, by the wall.
Blueprints
Get Counter-Blast Inversion from Galvani’s apartment. That’s the ground floor place near Dunwall Tower’s entrance; you stole a Painting from it during A Long Day in Dunwall. Break open the doors and loot the Blueprint inside the lab.
