At Sparta, near the rifles and the ammo.Can be looted from the Nazis in Black Station, or found near the supplies.After being rescued by Ulman and Pavel, directly behind Artyom through the door.Near the end you will find the goggles and a small collection of ammo. A gas mask is not required to explore the foggy side hall (as long as the player moves very quickly) but it is recommended. The destroyed tunnel in which the injured Communist soldiers are sleeping has a side door. Behind Artyom after falling off of the rail cart during " Front Line", in a small red box protected by Communist soldiers, along with a few MGRs and a moral point.Armory level (bundled with the stealth suit).Also, the wearing animation is removed, you will automatically equip the NVG right after pressing the N (default) key. The NVG in Last Light no longer obscure the player's vision, has a larger field of view, and the clearer vision means you can snipe with NVG equipped. They can no longer be used in combination with a flashlight but appears to be equipped with an infrared spotlight (the infrared equivalent of a flashlight) which has the same effect as using the NVG and the flashlight together, but without the extra battery drain or revealing the user's location.
In Metro: Last Light, the NVG return but with some slight differences they reduce the wearers maximum visual range to some extent as any target the user may see will appear hazy and unclear. Taking them off will allow the player to see any mutants or NPCs trying to flank them. If the player is swarmed in an area with nosalises or lurkers, it is a good idea to take them off and use the flashlight instead. The goggles obscure Artyom's peripheral vision. When the goggles are on, well-lit areas become difficult to manage through. One should keep in mind the drawbacks to using the goggles however. Like Artyom's watch, the 2033 version of NVG features a stealth meter at the top red means the player is in well-lit area that easily detectable, yellow means the enemy will find you if they get close, green means you are hidden, but you will still can be seen if you are in close proximity with the enemy, finally "no light" means you are completely hidden, only noise can give your location away. This drains the battery faster by around 40 percent, making the battery only last about 2 minutes from the original amount of about 3 minutes 20 seconds, but this makes it easier to see in very dark areas and is of great use when stealth isn't necessary. If the player uses the flashlight and the night vision together, they can extend the range of the NVG and see better. When the goggles are switched on, the player is much harder to detect than when they have the flashlight turned on. Night vision goggles are used to sneak through areas or seeing traps when the player cannot risk using their flashlight.