Stranger Things - Season 4eps9 ✔

Steve, Nancy, and Robin infiltrate the Upside Down Creel House to destroy Vecna’s physical body with Molotov cocktails and shotguns.

Despite the team's efforts, Vecna technically wins the battle. Because Max died (even briefly), the fourth gate opened, causing a massive "earthquake" that tore through Hawkins. Stranger Things - Season 4Eps9

The finale ends with Upside Down spores (the "snow") falling on a decaying Hawkins. Steve, Nancy, and Robin infiltrate the Upside Down

The Hawkins group executes a high-stakes mission to kill Vecna by attacking him on three fronts simultaneously: the fourth gate opened