Optional Missions:
- Stay out of combat
- Kill guards from stalking zones
Upon the start of the mission, jump above the fence of the Governor's plantation and move through using the crop fields for cover. Use Eagle Vision to tag the guards. It will make your job easier if you'll take care of the oblivious guards stealthily. There's a lot of ways of doing this so do what you prefer to eliminate them without raising an alarm.
Continue further the fields until you find some stairs leading to the villa. Activate Eagle Vision again to see the captain holding the key. Take him out then loot the key away from him.
Go up the stairs and go in the bushes at the back wall. Move through the bushes on the western side until you reach a watchtower. Feel free to take out the guards patrolling nearby that may compromise your position. You have to take out the guard on the watchtower since he can spot you from afar and can even shoot you. Once he's taken care of, go over the wall near the watchtower and hide immediately on the foliage.
Keep moving to the left and climb the shed. Silently jump up by the branches heading to the prison, then open the doors of the prison for a cutscene. Mission complete.