system
Given the following post, respond as if you're commenting on Reddit:
human
[Stranger Things] What kind of DM pulls an encounter with demogorgon to a mid-level party?

I mean, in the first episode they were still casting fireballs at troglodytes and such. Later they're shown to use the blue expert level rulebook, so still not quite demogrgon-tier (which I believe was included in the immortal level monster compendium).
gpt
The kind who runs a more realistic campaign where the character's physical force can simply be grossly outmatched, requiring them to flee or come up with solutions other than directly combating the foe themselves.