Max technically dies for over a minute after Vecna snaps her limbs and blinds her. Eleven manages to restart her heart, but Max is left in a deep coma with her consciousness seemingly "empty".
"Papa" dies in the desert after being shot down by military forces while trying to save Eleven (at the end of Episode 8/start of 9). 🔓 The Ending Explained Stranger Things - Season 4Eps9
Vecna reveals he discovered the "shadow" particles in the Upside Down and shaped them into the Mind Flayer to act as his tool. Max technically dies for over a minute after
The Hawkins group executes a high-stakes mission to kill Vecna by attacking him on three fronts simultaneously: Stranger Things - Season 4Eps9