At the start of the game, you need to talk to a stalker named Wolf in the Gordon camp. Behind Wolf is a ladder that leads to an empty backpack in the attic. Climb the ladder but do not enter the attic. Instead, walk around the ledge formed where the roof and walls meet. You can work your way onto the roof of the house by doing this. Once on top of the roof of this house, there is an identical house north of the one you are on. You can sprint and jump to the roof of that adjacent house. Note: You will take a little damage. When you get to the second house's roof, carefully make your way to the side with a hole in the roof. Just past it, you should be able to make out a wooden crate you can destroy. If you spoke to Wolf and accepted the mission to rescue Nimble, you should have a pistol. Shoot the wooden crate to get a Stalker suit worth 15,000 Rubles.
Use the following trick to enter the Freedom armory without being detected. Push a chair towards the guard. The chair can fall down partway and the glitch will still work. When it touches the guard, jump on it then jump onto him. You will be pushed past the guard and into the armory hallway. Slash the lock with your knife to enter. Use the same chair technique in the armory or the other room to get out.
When in the Red Forest and the forester sends you on the mission to get the compass, get it and return to him. When you talk to him, tell him you have the artifact. He will give you a fully upgraded Vintar VC. Do not continue the conversation. After he gives you the gun, exit the conversation then talk to him again. Tell him you have obtained the artifact again. He will give you another gun. Repeat this as many times as desired, then sell the guns.
To unlock bonus content, enter the games folder in the Limited Edition of the game and run the "setup-bp.exe" file. To unlock the Pool multiplayer map and the U.K. and U.S. military multiplayer skins, enter "pseudodog" as a code. To unlock the Dark Valley multiplayer map and the French and German military multiplayer skins, enter "snork" as a code.
You can find this grenade launcher attachment early in the Rostok Wilderness. Just after you go past the building with the four snipers, there will be a sniper in a tower on your right and a garage building where a truck crashed into it on your left. Explore the garage building and you will find a stash box past some scorcher anomalies with the launcher and ammunition.
To exceed the usual 50 kilograms of weight you can carry, simply load excess weight on to a human corpse. Then press [Shift] + [Use] to drag the corpse along with you. By doing this, you can load a corpse with any number of items and move them from one location to another. Note: Because you cannot attack while dragging a corpse, use this trick only when there are few enemies around. Additionally, you cannot drag the corpse into a new map. Do not leave items you want to keep on a corpse or they will be lost when you enter a new map.
Unlock the following alternate ending by performing the corresponding tasks. Note: Do not meet the requirements to qualify for more than one ending.
ENDING - HOW TO UNLOCK A - Go to the Wishgranter with more than 50,000 RU. B - Go to the Wishgranter with over 1,000 rank points . C - Go to the Wishgranter when Lukash and Voronin are both dead. D - Go to the Wishgranter with less than -1,000 rank points. E - Go to the Wishgranter with none of the above requirements. F - Join the C-Consciousness. G - Refuse to join the C-Consciousness.
When you find you way into the sarcophagus, you will find a doorway that leads through a wire barrier and a hole in the wall with about ten people through the hole. Instead of going through that doorway, continue towards the light on the wall and turn right. There will be about two enemies there. Kill them and go through the door to their right. Just through that door to the left will be a ladder going to a door. Search the room at the bottom and you will find a chest with an Exoskeleton inside. It adds on radiation; bring some artifacts that counter radiation. It weighs 15, but gives you the ability to carry an extra 20. It has good protection from bullets but not much from anomalies.