Ending 20, termed "Remaining Ending" prior to The Binding of Isaac: Repentance, is unlocked just after defeating the manager Delirium, who's Isaac's representation with the "gentle at the conclusion of the tunnel".[16] It builds on activities seen in Endings twelve, fifteen, and 17, and shows Isaac recalling his Reminiscences in https://titusgsdyi.blog-ezine.com/28668978/about-liberty-cap-the-binding-of-isaac