Ending 20, called "Closing Ending" just before The Binding of Isaac: Repentance, is unlocked just after defeating the manager Delirium, that's Isaac's representation with the "light at the end of the tunnel".[sixteen] It builds upon events found in Endings twelve, 15, and 17, and demonstrates Isaac recalling his memories in https://libertycapisaac26036.bloggactif.com/29236523/indicators-on-liberty-cap-the-binding-of-isaac-you-should-know