Wesker's stashes

The stash expert Wesker is challenging us to find each of his stashes hidden across the Zone. Each will be marked on your map, but will be extremely difficult to access without jumping artifacts and will require specific parkour techniques.
Mild warning: This quest has no concrete reward and is only done for the challenge. This article will contain spoilers and can reduce your enjoyment if you are considering tackling this questline blind.
== Walkthrough ==
There are two stashes in Zaton, four in CNPP-2, one in CNPP-1, one in Red Forest, one in Cordon, four in Eastern Pripyat, two in Central Pripyat, one in Limansk, one in Wild Territory, two in Dark Valley, and one in Agroprom for 20 stashes in all. If you want to save a little time, save those in Eastern Pripyat for last.
After picking up the final stash, Wesker will tell you to put together the message from the gathered notes, and each word starts with a capital letter.
The completed note reads Look for Greenhouse Effect!, which references the greenhouse in Eastern Pripyat east of the school. Wesker's final stash is on the roof of the building connected to it, which can be reached from the streetlamp after jumping from the schoolhouse roof. Inside is the full backstory of Strelok.
Return to Wesker on the Skadovsk and speak with him to receive the Zone Expert achievement.
== Notes ==
* These stashes are meant to be done without jumping artifacts, which can trivialize reaching them.
** The same is true to a lesser degree about stacking rucksacks or backpack jumping.
*Strelok's backstory reveals the importance of the flavor text in the Gromov achievement received after speaking to Ozersky. Sergey Yakovlevich Gromov, the scientist who worked alongside Ozersky, is actually Strelok's own father.
* If you finish this quest and Volazar's quests, Volazar will have a present for you in the end of the game.
== Bugs ==