C14 He Was Looking for the Palm Tree and Sand

"The system has announced the resources needed to upgrade from Level Three to Level Four: 30 kilograms of sea salt from any level, 10 kilograms of Level D or higher clay, two Level C or higher freshwater fish, three Level D or higher bows and arrows, and one Level C or higher Mountain Splitting Axe."

"Since the highest level among all survivors is currently only Level Three