What is the HARDEST Achievement/Trophy in Death Stranding?

This is the rarest achievement in the popular game Death Stranding. From legendary game creator Hideo Kojima comes a genre-defying experience, now expanded in this definitive DIRECTOR’S CUT. As Sam Bridges, your mission is to deliver hope to humanity by connecting the last survivors of a decimated America. Can you reunite the shattered world, one step at a time?