Also, I did not include grenades because those are always available (it seems). This is not intended to be an exhaustive list, just what I can expect to find the most of. So, I've make this list of maps with expected enemies and their preferred ammunition, i.e., what I can expect to gain from them. This allows me to minimize my supply and save weight.

Still, I like to use the same ammo that's being used against me if I can.

Find the rest of the anomalous household items.

(Available after completing the BTR task.)

Get a BTR for protection of the Barrier.

Find out what happened with post in Darkscape.

Moonshine and the knowledge of the universe.

Resolve the situation with the prisoner at the Agroprom.

When you have the Cheburashka in your inventory and you accept the following tasks, the Cheburashka promps you with an offer to help by providing a hint for each task:

Cheburashka Missions - The Cheburashka is obtained during the Help your fellow rookies.

Get the forth part of the map including Ferret out information from the prisoner and Flying Island.

Science: Get a map, and Dangerous Science: Inspect the signal source.

Get the third part of the map including Dangerous Science: Find the group, Dangerous.

Get the second part of the map including The Anomaly in the Tower.

Get the first part of the map including Safe of Digger, Digger's weapon, A Strange Anomaly, and Anomal engine.

Find the artifact for the wounded stalker.

At some point later in the game, I usually find his body north of the Rookie Village. Nimble usually doesn't make it to the end, either. If this happens, you may as well start a new game if you want to complete all the optional tasks. Subsequently, I've had games where the attack came as early as 10:30 AM on the first day, leaving Tolik, Wolf, and Musician all dead. The military attacks the village at random times without warning or provocation. I recommend taking these tasks as early in the game as possible.

Also, fix2 contains a fix for a bug that can keep you from throwing a grenade if you hold it too long. These contain fixes for some of the optional task that you may not be able to complete otherwise. NOTE: Be sure you have STALKER_OGSE_0693_Patch_2_10_Revised patch and STALKER_OGSE_0693_Patch_2_10_Revised_fix2.

Stalker call of pripyat owl