Though Netflix hyped Stranger Things 4 Vol. 2 as being its own standalone season of the Duffer Brothers’ nostalgic sci-fi opus, its two extra-long episodes are truly just the final chapters of Vol. 1’s story about what’s really been hunting Eleven and her friends. Stranger Things 4 Vol. 2 puts a period on this season’s introduction of Vecna, and sets the stage for its psionic hero and villain to take on even larger roles in the…