You can find the full text of the book online, for example, on the Internet Archive or at ELE Chaco .
Robert Fisher's El Caballero de la Armadura Oxidada (1989) is an allegorical tale following a medieval knight who must shed his literal, emotional armor through a transformative journey of self-discovery. Guided by Merlin, the knight learns to face his fears and true emotions, ultimately shedding his protective, limiting barriers to find inner freedom. The novel highlights themes of self-knowledge and emotional vulnerability through the knight's journey to remove his armor. El Caballero De La Armadura Oxidada Robert Fi...