The relay you need to install the repeater unit on is located in the main complex. After you go inside, talk to Dr. Lawson. Lawson gets mad after you ask about the radio and you ignore the topic of infestation and she refuses to tell you where the station is (you can get this information from her after you promise with Kiss Ass that you will help her contain the situation) . However, it doesn’t matter as the radio tower soon becomes useless due to plants blocking access. In order to kill the plants, you need to turn off the irrigation system, i.e. two pumps on the west and east fields (this also kills the pods and allows you to cut through the walls of the plants). Go to the basement.
In the basement, use the computer next to the ramp to open the west tunnel. It’s full of poisonous fumes, so you need to get on the road. More or less, halfway through the tunnel, the path will be blocked. You can use the nearby car to cut through the plants (computer skill required) or destroy the wall in the side room (using Demomen, melee weapons or explosives) with a group of opponents inside. At the end of the tunnel you will find the air conditioner switch. Turn it on to remove fumes and then turn it off to unlock the passage.
On the western field, go to the building in the northwestern part. There you will find a flow valve that you need to install on the nearest pump. Return to the basement and there, using the computer, open the east tunnel.
There are also couples in the east tunnel. You can just break through (remember that only one character should be safe, and the rest can stay at the computer to avoid damage), or activate the air conditioner. Here, however, things are much more complicated, requiring you to activate up to five fans (details on the basement map). The East Field pump is located exactly across the location. In the room where you will find a note covered in blood. Heal the party members before you enter, if possible!
Inside, you will first fight several mutated insects. Pay attention to Dr. Larsen on the spot. Avoid launching AoE attacks to avoid hitting him. Once the insects are dead, it’s a good idea to search for nearby corpses with Perception and then talk to Larsen. In fact, he is a synthesizer and is responsible for the whole situation.
Larsen explodes upon death – keep your party away from him
You can figure out the fact that Larsen is in charge by choosing the appropriate dialogue options, or you can just attack the doctor, for example, and he will still tell you the truth.
It can be difficult to beat Larsen. Patrick isn’t very tough and can be killed quickly with heavy weapons, but he performs several strong attacks per turn. Before starting the fight, make sure that each member of the squad has a lot of health and that the medic has health kits, in case someone needs a fix after the fight. When dying, Larsen will explode and deal heavy damage to those near him. So stay away from your party.
If you have the base game, before you return to the basement, heal your party and assign ammo – In the field, in the center of the area, a group of people that can be quite a challenge for your jaded party. After dealing with them, return to the basement and return to the main complex. By disabling irrigation you kill all the pods, so moving around the Ag center will now be much easier and safer. They will explode when a piece passes them, but the explosions will not harm your people.
You still need to mount the repeater block. The tower is in the western part of the main complex, if you still haven’t opened the air lock that is blocking the passage, either talk to Rose to get the access codes or use the computer science skill on the computer. You can also walk along the wall of plants, which can now be easily destroyed.
Open inventory and place the Repeater in the hotbar. Then select it and the clock on the panel, as in the screenshot. Let Vargas know you’ve been successful and head to Highpool.
You can destroy the pumps (which is what Larsen would like you to do). use your explosives for this. Destroying the pumps will set the Ag Center back and this will lead to dissatisfaction with Katie Lawson.
Help either Highpool or Ag Center
Install repeater blocks on two radio towers;
Turn off the irrigation system to prevent the spread of infection.