No Rest For The Wicked presents many engaging and thrilling boss fights, including the formidable Riven Twins. These torn conjoined twins, branded as heretics and imprisoned, are encountered during the ‘Servant of God’ quest as players traverse The Nameless Pass on a mission from Madrigal. Defeating bosses in the game yields significant XP and provides valuable rewards, including specialized weapons and gear, making these encounters a crucial aspect of gameplay.