: Local town locations containing essential (like the 'C' and 'R' keys) hidden within Hidden Object Scenes [5, 13]. The Underground Complex

In recent versions, traders offer more diverse quests, including those below your current tier. They are the primary source for the Final Stand Questline , which is the ultimate end-game objective Loot Spots for Backpacks:

Home to the best loot in the game and the constant presence of "Nemesis" zombies.