3 0 0Actions Report Solution To help with unlocking this during your playthrough and not having to hunt around for salvage after, you should unlock the skills Advanced Salvaging and Bone Collector as soon as possible. This allows you to get more salvage from crates etc and salvage from animals.Loot every crate and person you can. Loot every animal you kill. You will also get salvage at certain points in the game (I noticed it going up over a thousand after a few cutscenes).Some crates and enemies contain weapon parts which are required for upgrades so you should continue to pick these up even if you have massive amounts of salvage.With the 2 skills mentioned and following the logic above, I had unlocked this just before reaching the final campsite that warns you that there is no return from this point.If you reach the end and still don't have all weapons upgraded then you will get the option to continue and hunt down further salvage.
0 0 0Actions Report Solution If, like me, you are still needing XP and salvage post game then fast travel back to the Coastal Forest. There are no enemy here, only deer and rabbits. You cannot overhunt this area and they continually respawn.