As the first boss in the game, the Thirteenth Brother can make short work of you if you're not careful.

Black Book is a deck-building game and has a fairly complex combat system. The beginning of the game features mostly weak enemies that can be easily disposed of using simple damage dealing cards.

However, Black Book's first boss, the Thirteenth Brother, serves as a wake-up call to any player who thought they could beat the game effortlessly.

There are a few things you can do before the fight that will slightly lessen the upcoming challenge. Be sure to use the ax found in the backyard to get into the mill where the fight is taking place, to save some hearts.