The event will be free to all B3 players, although you’ll need to have progressed far enough to leave Pandora for the first time and have the option of visiting Sanctuary III. You’ll also run into a new character, Maurice, who’ll appear in Sanctuary to help with Bloody Harvest and future in-game events. Yes, Halloween game events are almost cliché at this point, but you probably won’t mind if you’ve already burned through B3 and crave more variety.