https://www.gamespot.com/articles/destiny-2s-festival-of-the-lost-adds-horde-mode-ne/1100-6462443/

With Halloween looming, the launch of Destiny 2's Festival of the Lost event is drawing near. Bungie had previously only offered a small tease of what to expect, but it's now provided an overview of the new types of activities that await players, as well as a look at the Halloween-themed rewards that will be available during the event.