In the prologue of the game, everything is clear.
Walkthrough DESOLATE (Main Quests)
This material describes only the story tasks. At the same time, in another article we will describe how to complete other missions.

Hello, Granichniy
You will find yourself in the room. Take the key card from the drawer and apply it to the electronic lock, then go outside (to the light).
Go to the marker to the lighthouse, destroy opponents on your way. Go inside and inspect the device. It is broken, so you need to move to a new place. Once in the cinema, look for two boxes of details. You will find the first one near the building where the film projector is located, and the second inside the building to the left of the big screen. Collect the parts, go back to the lighthouse and fix the repeater. Do not forget to start it by pressing the red button.

Oasis
Talk with the curator, go to the railway station “Iskra” and go down to the underpass. Find the corpse, there is badge. Go to the Oasis, talk to the Locals, then go downstairs and chat with merchant Michael. Task is completed. From here, you can go down even lower, where your personal base is now located. You can repair the workbench, oven, medical station, as well as improve them once. You can buy items from Michael for customizing the room. Each player has his own room.

Help science
After that, chat with the biologist. Go to the specified place where the radio detection is located. Go through the first dome and enter the second one to find a door with an electronic lock. Need a key card. Go outside and immediately go into the first dome through the nearest opening. You will find yourself at the bottom. Move from room to room and find a separate room where the key card is on the table. Take it, open the door in the second dome and kill Vanogu.

The monster will teleport, and most often, if it is not below, then — at the top, it clings to the wall. After that, search the body, then go to the pneumopost. There are several pieces scattered around the map, but one of them is definitely in the Oasis.
Weather report
Go to the weather station and look around. Inside you will find special antennas. It is necessary to lift each of them and move them to the right places. All of them are located near the weather station (no further than 50 meters). So, take the antenna, start move. Pay attention to the lights on the device. If they light up, then you are moving in the right direction. There will also be an increase in the sound signal.

Go down the hill from the building with antennas and find the first place next to the cliff. Take the second one, exit the building through the top and go left to find the desired position. The other two antennas — when you exit the building, go right. As soon as you do this, activate the lever in the building of the weather station.
Important documents
Move to the specified location and find the locked door with an electronic lock. Pay attention to the corridors on the right side. They are flooded, and the wires are lowered into the water. When you are near, the curator will give a hint.