After the cut-scene you'll find yourself on one of the rooftops. Get to your own apartment by any means necessary (marker is, of course, on your map and radar).
Soldiers will come here shortly after your arrival. Try to eliminate the guy calling for reinforcements. If you won't do it quickly enough, better run away. Once you get out of their sights, change your appearance, wait for a cooldown, and then return to your apartment.
You'll get some intel on your target - he's going to be evacuated soon, from the park nearby. Run towards his extraction point. And change your appearance, you have to look like a soldier.
Once you approach your target's vehicle, announce that the area is secured. A guy in a suit will get out of the vehicle and go towards the tunnel. Run to him and consume the guy.
Soldiers will, of course, try to shoot you. Run away from them, changing your disguise once you get of their sights.
Reward: 15000 EP, 2 new events available