Is the climax of Drunkards Walk II based on/inspired by/influenced by the movie Unbreakable?
No. I plotted out and actually wrote part of the ending of DW2 in 1997, three years before Unbreakable reached theatres. Additionally, the motivations of Quincy and Elijah Price are quite different: Price wants to prove superheroes actually exist, as a means of validating and justifying himself. Quincy is trying to prompt their spontaneous creation in a universe where they didn’t previously exist.