Not an elseworlds story, but the other day I had a vision of a story called “Man of 1000 Punches” or something like that.
It can be set anywhere (old west, present, future, ancient China, etc) but a man has the ability to form enormous amounts of power into his fists and can basically punch through mountains. The catch - he only has a finite amount of punches he can throw. Each punch hurts him more and more - he has spent a whole career fighting super-powered villains with his fists and now it’s catching up to him. The series becomes more of a “how will he spend his last few punches?” and kind of an Old Man Logan/Unforgiven/Fade by Robert Cormier type of tale.