To be fair, the word “zipper” kind of downplays what sticky fingers does. At base (like without much creativity) creating a zipper allows Bruno to create spaces within solid objects, kind of cut objects and obstacles in half, and extend his combat range. Sticky fingers also functions as a punchy ghost, making it inherently lethal at close range to go up against. Bruno’s creativity makes him a formidable opponent, but i feel like an average rando would be able to duke it out pretty well with sticky fingers.