|The Day of the Locust (1975) [Adore]: Stomped to death by Donald Sutherland in the street.
Little Children (2006) [Ronnie J. McGorvey]: Possibly bleeds to death (off-screen) after castrating himself; we last see him as Noah Emmerich rushes him to the hospital, so it's unconfirmed whether or not he survives. (Thanks to Tommy)
Watchmen (2009) [Walter Kovacs a.k.a. Rorschach]: Vaporized by Billy Crudup's powers, to prevent Jackie from exposing Matthew Goode's plans. (Thanks to Agustin, Christina, and Tommy)
A Nightmare on Elm Street (2010) [Freddy Krueger]: Burned to death when Clancy Brown and the other members of the lynch mob burn down the building around him; he returns as a supernatural being in the dreamworld. (Thanks to Rogue and Tommy)