Here’s a cheat sheet for the Fortnitemares challenges including the locations of where to find Ghost Town, the Haunted Forest, and a Spooky Farm.
The v11.10 update was released on Tuesday, 2nd November. The update included the Fortnitemares event for 2019. The event includes challenges and rewards, the Storm King LTM, and a bunch of new cosmetics, most of which have already been released in the Fortnite Item Shop.
There are a total of six challenges for Fortnitemares, but there’s also a handful of challenges for creative called “creative curse”.