The 9 biggest questions we have after watching 'Stranger Things' season 2

Warning: Major spoilers for season 2 of "Stranger Things" lie ahead. Read at your own risk.

The second season of "Stranger Things" was somehow loaded with even more monsters, characters, Eggo waffles, teen romance, and Upside Down drama than the first season.

So, obviously, we have a lot of questions that may or may not keep us up at night until the inevitable season three arrives on Netflix, which could take well over a year.

Here are all of our biggest questions after watching "Stranger Things" season 2:

Can the shadow monster break the gate between the Upside Down and the real world?

The gang contains the shadow monster when Eleven closes the gate to the Upside Down, but they definitely don't defeat it. The tease at the end of the season shows that this is definitely not the last we'll see of the shadow monster.

The shadow monster is coming for the people of Hawkins, but how, and why? With the gate to the Upside Down closed and Hawkins Lab abandoned, how can the shadow monster break into the outside world? Does the shadow monster just want to kill (eat) everybody?

Will the Upside Down ever affect anyone outside of Hawkins? Or anyone in Hawkins who doesn't already know about it?

"Stranger Things" is at its best when the events and the characters are confined to the town of Hawkins, Indiana. At this point, Hawkins appears to be the only town in the world affected by these supernatural events. And, more specifically, the people affected by them seem to be the ones who know about it, or the people close to them.

Bob sacrifices himself the the demodogs (or stupidly just stands there when he knew he was being hunted), but he knew about the Upside Down for at least a day, and was dating Joyce Byers, who knew about it.

We also see the tunnels affect farmers in the area. But at what point does the very dangerous Upside Down become an actual life or death threat to other people outside of the main cast? For the threat to feel believable, it will have to grow moving forward.

Is there anyone left to hunt down Eleven? AKA: Is Dr. Brenner alive or dead?

The last we see of Dr. Brenner in season one, the Demogorgon attacks him, implying that he doesn't survive. But on Eleven's trip to Chicago, Eight implies that he could be alive, and uses her powers to make Eleven see him.

Pretty much everyone except Dr. Owens is dead, and he's helping Hopper protect her. So who's after Eleven, now that all employees at Hawkins Lab are demodog meat? Dr. Brenner might be out there somewhere, conducting more experiments outside of Hawkins. And he could be coming for Eleven and Eight next. Eleven believed Dr. Brenner was dead as Barb, but after visiting Eight in Chicago, she's not so sure. And we're not, either.

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