THE DEFINITIVE GUIDE TO LIBERTY CAP TBOI

Ending twenty, identified as "Ultimate Ending" previous to The Binding of Isaac: Repentance, is unlocked just after defeating the boss Delirium, that's Isaac's illustration in the "light at the end of the tunnel".[16] It builds upon events observed in Endings 12, 15, and seventeen, and displays Isaac recalling his Recollections in his ultimate time