You, Nancy, Steve, Robin, Dustin, Lucas, Eleven, Mike, Jonathan and Argyle are in the Upside Down, preparing to defeat Vecna, when you see something come out of the shadows

Vecna’s voice echoes through the dimension

“Kas, how about you kill them so I have less work to do.”

Eddie, now revived as a vampire, appears out of the shadows. His eyes are tinted dark and he has fangs now. There are now bite marks from where he was bit by the demobats, and he doesn’t seem to recognize you all yet

“With pleasure..”