DETAILED MAP OF THIS ZONE - NPC's & IMPORTANT PLACES:
Important NPC characters (red color):
1 - Professor Kruglov - This is the only important NPC character of this map. You will also encounter other friendly Stalker's in this area, however you won't be able to talk to them. Kruglove will ask you to escort him to Yantar.
Important places (green color):
1 - You are going to be attacked by a group of snipers here. As a result, you must be very careful. Move slowly. You will also have to use nearby trees, cars and buildings for much needed cover.
2 - This is where the snipers are currently hiding. You will have to enter this building, not only to get rid of them but also to proceed to the next section of the map. One of the bandits is in front of you. The rest of the soldiers are occupying the upper floor. You could shoot them or use a grenade. Important! The soldier who was guarding the ground floor was carrying an excellent machine gun - TRs 301. Make sure that you have picked it up, however don't use it just yet. You will have to find more ammo in the first place.
3 - You will encounter the second group of bandits here. I would recommend hiding behind a large truck or jumping on top of it. You should consider using the scope. Additionally, watch out for an enemy sniper. He is occupying a large tower. Make sure that you don't expose yourself too much. You will also find a lot of artifacts in this area.
4 - This is where the military helicopter has crashed. A small group of scientists is fighting with the villains. You will have to help them to kill all bandits.
5 - You could consider taking a closer look at these buildings, however this won't be necessary. Try using your minimap, instead. Look for additional stashes, as they may contain valuable objects.
6 - Some of the bandits are hiding in these spots. I'd strongly recommend securing these areas earlier, because you will have to perform an escort mission here. Watch out for a large destroyed building. That's where most of the bandits are hiding. You should also be on a look out for artifacts and other valuable things.
Once you've returned from Yantar and X16:
Once again, you will have to secure a large destroyed building, mostly because you will encounter new bandits there. It's very important because they're going to be equipped with excellent rifles. Furthermore, if you pick up one of these weapons, you will be able to take a scope (SUSAT) for your current gun.
7 - This road leads to a destroyed tunnel area. You won't find any interesting objects there, however I would recommend taking a closer look at the surroundings. I'm sure that you'll recognize one of the dead scientist. It's going to be Gordon... you know who. ;-) Watch out for deadly anomalies, though.
8 - This large tunnel leads directly to Yantar sector. Sadly, you will have to secure this entire area, mostly because you'll be protecting one of the scientists and it's the only road to the new sector. You will have to avoid several dangerous anomalies. Try using the sprint button here. Once you're at the other side, you will also have to kill several zombies. These creatures are using primitive weapons, however try taking them out from a large distance. There are also a lot of artifacts in the tunnel. Try taking some of them to the Barkeep (if you want to sell them).