Perhaps not the biggest steaks in the game, but we collectively realize during the Hopper and Joyce scenes that Joyce is never going to be able to find a funeral director in Hawkins to take her seriously again. They keep popping back up, WTF is happening!
Eddie makes an epic, thrash-worthy last stand with "Master of Puppets," which was indeed very metal...
And all in all, we were left with jaws dropped when our heroes, for all intents and purposes... Lose. Like for real for real.