Search Hamilton's quarters (optional) | Mission 3 Dishonored 2 Guide

Collect the ether bottle and throw it next to the enemies to knock out both of them at the same time.

The next step is to find information about Sokolov's whereabouts. In order to do so, you have travel two floors below your actual position and open the previously locked doors with Dr. Hypatia's key. This will allow you to get to Hamilton. Afterwards, you will end up in a place shown on the above screenshot. Crouch, hide behind the table on the right side and collect a bottle of ether from the top of it. Wait for the elite guard (wearing red clothing) to approach the regular one standing near the window and throw the bottle right next to them. This will knock both of them out at the same time.

In the room on the right side you will find Bloodflies and a number of nests - the latter might drop a blood amber. The room on the left side contains an audiograph and will give you access to a room where Hamilton is located. After the short conversation ends, collect his belongings, together with a key to the room, and head to the uppermost floor of the building. From here you will be able to see Vasco's office, located at the end of the lab room - the office contains a safe. Vasco has the access code to the safe, but given the fact that the man is lying in a room with Dr. Hypatia you can ignore it for the time being.

Disarm the traps before entering the apartment.

Before you enter Hamilton's office you must disarm the traps located in the opposite corners. Hamilton's room contains a number of valuables, as well as a blueprint - Memory Vapor Distillation. You must also collect his note - it can be found on top of the second desk.