Escape from Valley of Whispers

We've landed in the sewers beneath Zaton, in a map called Collector, with barely any acceptable equipment. Our goal is to complete the following within 24 ingame hours to save Sanya's friend:
* Find our way out through the sewers
* Grab five packs of 7.62x39mm ammunition for Sanya
* Shake down Genghis for the safe code
* Return to Valley of Whispers via the sewers once again
This is an unmarked quest.
== Walkthrough ==
=== Escape the sewers ===
The sewer map, Collector, will be a cramped nightmare to navigate with a massive amount of small targets and hordes of mosquitos. Before moving on, check inside a pipe near your left for a stash containing an MP-9 and ammunition.
Be aware that any rats spawned in this quest have a chance to be rolled into plague rats instead.
==== Parasite hallway ====
A few rats and cockroaches will harass you from the left hallway but are easily taken care of - that hallway leads to a dead end. On the right path are two zombies and a Parasite or Plague zombie, which will unavoidably cause problems. You can kite and kill it, but you will need to avoid its corpse or catch the plague. If you do not have a Serum from trading with Pirogov, you may want to reload until you can kill it in a location that you can jump over. This is also a good place to use one of the M-61 frag grenades you received from Sanya, as it can kill the Parasite without exposing you to plague or psi damage.
==== Crowded culvert ====
Next you will reach a room that dips into a pool with only a small culvert as its exit. The massive amount of rats and mosquitos here will make it impossible to advance past the culvert due to the requirement of low crouching. One way of taking care of this room is taking cover behind the L-shaped pipe in the corner and tossing out a grenade. This should clear most things and allow you to move on. You can also get on top of some props and painstakingly clear everything out by shooting it. The only strategy that really will not work is trying to rush into the culvert, since you are vulnerable while low crouching through it.
There will be ratan in the culvert, and possibly a few Chernobyl hornets. Use a shotgun or melee weapon to take them out quickly.
==== Mosquito tunnels ====
As soon as you exit the tunnel, a drowned zombie that is always set to be emitting radiation will stand up and begin to chase you. It will follow you all the way through the next section, so you can either choose to deal with it and the spawned frogs now or simply run.
The next section of the area will involve an incredible amount of mosquitos that will be essentially impossible to remove with your current gear. Water in the tunnel makes it difficult to jump or move quickly, but you can run while hugging the walls of the circular tunnel. In order to cross some sections, the pipes on either side of the wall can be climbed to form a safe channel to advance through the area.
==== Spider den ====
At the end of the path is a small hole that needs to be low crouched through in multiple spots. There is a large family of spiders inhabiting this area that will rush you as soon as you attempt to emerge. You can either bait them past the low crouch barriers by making noise in the previous hallway or rush into the next section and jump on top of an object, giving you free reign to melee or shoot them to death (this may not always work). Clear the spiders and a few rats and cockroaches in the next area.
The next section will be widely populated by approximately 24 spiders, so ensure you have room to retreat if there are too many advancing at once. There are plenty of props to jump on top of so this shouldn't be too hard as long as you have ammunition to spare.
After clearing the area of spiders, you can climb up and finally exit to Zaton.
=== Zaton ===
Make your way out of the cave and speak to Owl on the Skadovsk. He'll supply you with all of the ammunition required for Sanya and a hand teleport back to the Bar for solving the mystery of Devil's Triangle, along with 40,000RU if you had 100kg on you before entering the Valley. You should be holding at least two Moonlight artifacts from your travels in the valley, so you can consume one to quickly re-equip yourself at the Bar.
=== Find Genghis ===
Head to Dark Valley for Genghis. You will see his helicopter lifting off and going south - talk to Hog, who tells you that the helicopter is headed for the bandit camp in Darkscape.
Upon reaching the sawmill, the helicopter will once again take off, but this time to the west. Strelok remarks that it's likely he is heading to the ATP in the Cordon.
Genghis will be at the ATP with two armored bandits as guards, along with the natural bandit spawn. He will be aggressive so don't hesitate to blast him. He will drop his PDA, which contains the code for his safe.
Make your way up to Zaton and through Collector once again to Return to Valley of Whispers.
== Notes ==
* There's no need to actually engage the bandits at the Darkscape sawmill. You can just run right past as soon as you hear Strelok's dialogue.
*Genghis drops a Big Ben at varying condition level.
*Genghis' helicopter appears to be invulnerable.
== Bugs ==
* Genghis appears to be scripted to run to his helicopter to escape if his guards are fired upon, but stops doing that if he sees you and tries to shoot you instead. It's unclear if this is intended behavior.