Many unique weapons and suits are required later for massive Chain Quest rewards; selling them can soft-lock your progression.
Because of the mod's extreme complexity, the following "papers" and digital resources are critical for progress: /_ld/6/640_stalker-op-2-2.torrent
Standard containers are limited to 50 items. Use custom rucksacks placed in "out of bounds" areas (like the Bar balcony) to prevent NPCs from stealing your gear. Many unique weapons and suits are required later
Detailed setup instructions, including patch application and Steam compatibility, are found in community guides like the Steam Community OP-2.2 Guide. including patch application and Steam compatibility
A curated guide often cited by the community is available on Rentry, which outlines how to complete the game with optimal quest progression.
These are vital tools for escaping the "unfair" combat encounters common in this mod.