I was reading about this show after me and my partner finished S1 (hoping we’d get another season)… It was supposedly a 3-season arc design by the Duffers, with almost the entire cast coming back, and the final scene in S1 alluded to there being more. I read S2 was already greenlit, not even 2 night ago. Too bad for that to look forward to! Oh well, at least they wrapped up the season well enough that it could be stand alone.