Ending twenty, called "Final Ending" prior to The Binding of Isaac: Repentance, is unlocked after defeating the boss Delirium, who is Isaac's representation of the "gentle at the conclusion of the tunnel".[16] It builds on occasions witnessed in Endings 12, 15, and 17, and reveals Isaac recalling his Recollections in https://caidenzqeoz.blogpixi.com/28777359/binding-of-isaac-liberty-cap-secrets