Press key 2 to switch Shadow Armament. There's a sack ahead that you can shoot down.
After completing the task, teleport back to the save point you used earlier. In the room to the left of the save point, you can obtain materials, and there are two interactive spots.
There is more Dust behind the house.
Let's turn back and head towards the bridge.
Go straight to find some Dust. You can ignore the enemies on the right for now.
Head up the stairs to reach the save point. However, a "Ghost Messenger" will suddenly spawn, which is tougher than regular enemies.
After saving, you can jump down from the right to assassinate the enemies below.
After killing them, pick up the materials on the left.
We can't open this iron gate for now, so just ignore it.
We enter the tower, where three Bronze Men will spawn. The Bronze Men have shields; you can use an axe to break their defense first, making them much easier to kill afterward.
After eliminating all enemies, pick up the book on the right side of the main entrance [Mystery of Killing Intent Modification #6: Investigation of the Killing Intent Tower].
