Superman at earth’s end

In this 1995 DC Elseworlds tale, an aged Superman navigates a post-apocalyptic 22nd century. He battles bat-like mutants and the "DNA Diktators," revealed to be twin clones of Adolf Hitler, who have desecrated Batman's grave. Notably, Superman, abandoning his principles, wields a massive gun to defeat the villains. Mortally wounded, he ultimately cremates himself alongside Batman's remains, marking a dark and unique departure from the hero's traditional narrative.