It ends with them playing d&d in the basement and it was all part of the game that probably won't happen but it's still a possibility
It was all a dream unlikely but still it could happen
Everyone dies I would cry my heart out if that happened
Everyone has a happy ending very unlikely
You choose what happens if that happens it would end with someone talking in the background probably Finn or someone
Or like Noah saying and that was my life story and the it ends (I mean Will saying that)
Ends with Hawkins falling
Sorry if you didn't understand some of them