The difficulty set is individually assembled at the beginning of the campaign and used in each episode. To do this, take the 5 cards of your chosen difficulty from all (9) cards in the difficulty set. Put the remaining cards back in the box. For the entire campaign, these 5 cards are referred to as the difficulty set and are indicated by the difficulty icon.

Clarifications:

• If you’re supposed to add the difficulty set to the encounter deck (indicated by the difficulty icon), use only the 5 cards you took at the start of the campaign.
• If you use Nemesis cards, the difficulty set will be further customised. See Nemesis Cards.