If you have the D&D Starter Set for Stranger Things, it has the campaign the kids were playing.

I converted the adventure with Genesys rules and adversaries, magic items, etc.

Its in the Files section of the Terrinoth Explorers Facebook group page. (won't let me upload a file here for some reason).

https://www.facebook.com/groups/181125372612827/permalink/739678386757520/

I would suggest you put the link to the facebook group's files page in your original post @IamGazrok .

Done.