Alone in the dark

Lukash wants four special mercenary briefcases hidden in Pripyat-1 Underpass. All are located in the central dome room, and it will be necessary to enter the underpass from X-8 laboratory.
==Walkthrough==
===X-8 laboratory===
On entering X-8, your flashlight and NVD will both cease to function. Lukash will inform you of a stash on top of one of the elevators with some glowsticks inside which you can use - delaying the mission is unacceptable.
=== Pripyat-1 Underpass ===
Entering the underpass, you might notice more psi-poltergeists and pyro-poltergeists than normal. This will be true at all stages of the underpass so bringing along a "Typhoon" Turret to quickly take care of them isn't a bad idea.
The entry room's spawns will be bolstered with a few poltergeists along with an exploding zombie and a ghoulish zombie. The dome room will be infested as normal with the regular spawn (controllers, burers, poltergeists) with the addition of 5 exploding zombies and 5 ghoulish zombies. Make sure you have the means to kill the exploding zombies at range.
The hallway out of the area will have an additional Grandmother-controller and robust controller.
==== The briefcases ====
True to the intel, all four briefcases are in the dome room and are thankfully not too hidden.
After finding all four, Strelok will message Dimak about a replacement flashlight.
=== Eastern Pripyat ===
Talk to Dimak for a free replacement flashlight. He'll also fix your broken NVD at no cost.
=== Army Warehouses ===
Turn in the heavy briefcases to Lukash and he'll promise Freedom support for the Shevchenko as long as they're stationed somewhere away from the Duty squads.
==Notes==
* Crank up the brightness in-game if you want to avoid eyestrain. The glowsticks are not really a viable solution in combat as they are blindingly bright for about 5-10 meters or so and leave everything else in darkness on top of keeping your hands busy. They can be dropped if you want to light up an area for a while.
* Each briefcase is about 13kg so be prepared to haul away a fair amount of weight.
==Bugs==
* Make sure you visit Dimak first before turning in this quest to Lukash. Otherwise Dimak's dialog for fixing flashlight and NVD will be gone, making you stuck with no flashlight nor NVD.