Stash of an experienced stalker

As a reward for saving him, Denis gave you the information on a backpack of the experienced stalker, next to the [ Devilish encampment] anomaly in Red Forest.
This quest involves a huge mutant massacre.
== Walkthrough ==
The backpack is on top of one of the "hunchbacked" trees near the anomaly.
Finding it is easy, but getting away with the loot is not.
Upon picking it up, a huge number of controllers and zombies will spawn around you, and a voice over the radio will encourage you to hide in the pit at the center of the anomaly if you want to survive. You can follow the advice, and the zombies won't get inside the pit, but fighting the swarm from inside it will be hard.
The minigun contained in the stash conveniently comes with all necessary items to use it. As the spawn is triggered upon picking up all items in the stash, you can equip all this in peace one by one, instead of pressing "Take All" and frantically trying to do this while being surrounded. Remember that zombies are highly vulnerable to explosive damage.
Perhaps an easier option would be to escape to the [ tunnel exit] of the area. If the controllers are targeting you, you can kill one pack from the pit with a grenade or two, and escape through the opening.
The quest will be marked as complete as soon as you leave the area. You still need to kill all mutants, though, because they won't despawn.
== Notes ==
* Taking the PDA also spawns an Emerald Stone's Blood in the anomaly.
* The hunters will probably all die to the mutants. They're not essential at this point.
== Bugs ==