How to Play Crownfell Last Stand + full solo playthrough

About Crownfell: Last Stand, from BoardGameGeek:

Crownfell: Last Stand is an 18-card solo expansion for Crownfell. With a mere four anti-heroes, outmaneuver a relentless tide of 13 unique enemies. Enemy actions are determined by a simple card flip, providing smooth gameplay without complex decision trees. Each enemy performs the topmost action that it's possible to take from their current position. Any time there's a decision to make about which space or card to target, use the priority arrow on the back of the flipped card. Your goal is to capture all 13 enemy cards with just four cards of your own. -description from the designer