Before you can actually eliminate your targets, you should carefully infiltrate the farm first. Take your time to learn as much as possible about the location.
Reaching the farm
If you are starting this mission for the first time, you will be placed in the south-east corner of the map (M7.1). In contrast to all the previous missions, there are no "public places" for Agent 47 to feel safe. Thus, until you collect your first disguise, you will be attached on sight.
If you want, you can obtain your first disguise before reaching the very farm. Head north and draw your attention to a soldier located not far from the baler (M7.8). Just pay your attention to a patrol moving around the farm (clockwise). Another way to obtain a soldier uniform is to move towards two enemies in the south part of the farm (M7.34) (you can sabotage the generator to draw one of them away).
There are many ways to infiltrate the farm, and the easiest one is to go through a shatter of a small hut located right next to the starting point (M7.7). If you have your lockpick, you will come across many gates that can be opened (M7.5). Furthermore, the fence lacks barbed wire barrier in many places, so you can easily use it to your advantage.
Until you obtain your disguise, try to keep away from the main entrances, e.g. the one in the south (M7.2) and east (M7.6). Each of these entrances is protected by at least two guards and a camera can spot you (will require destroying the footage later).
Exploring the farm
Before you start exploring the farm, it is wise to learn more about restrictions in certain areas of the map. You can explore most of the farm in any disguise (apart from the scarecrow disguise). However, there are three exceptions:
- Area 1 is the main house and terrain surrounding it (e.g. yard). Only elite soldiers and hackers can access it. It's best to investigate a trailer in the east of the house (M7.10), as a spare uniform of an Elite Soldier is located there.
- Area 2 is the shooting range and the large barn. Only Spec Ops Militia and the Point Man can access this area. It's best to assault the Point Man located in a small building in the west (M7.8). You can shoot him (you will also have to kill a soldier standing next to him), electrocute him or poison him and assassinate once he goes to the bathroom.
- Area 3 is explosives test zone. Only explosives specialists can access this area. It's best to reach the baler (M7.15) and turn on the radio. Then, you can assault a specialist that will appear in this place and hide his body in the baler.
Before you begin eliminating the main targets, you should investigate the main house (M7.27). The monitoring room is on the ground floor (M7.34) and you should destroy the footage (if you got caught on camera or in case you will). This place is protected by at least one soldier but he can be dragged away and attacked in the back room or (a better option) turn on the vacuum cleaner and distract him.
Furthermore, there are two keys that you can find useful - Rose's Room Key (M7.14) and the garage key (M7.15).