https://www.pcgamer.com/destiny-2s-festival-of-the-lost-begins-next-week/

Destiny 2's Halloween-esque event Festival of the Lost will return for 2018, with festive decor in the Tower, new Triumphs to earn, and daily bounties with Fragmented Souls awards that can be used to purchase festival masks and the Horror Story legendary auto rifle. 

Revelers will also have the opportunity to take on the "ghouls and demons" that are haunting the Haunted Forest—basically the Infinite Forest with sexier lighting. Solo players and fireteams will have 15 minutes to get as far into the forest as they can, taking on increasingly difficult enemies as they go.