From his first appearance in 1969's Hercules in New York to the present day, Arnold Schwarzenegger has killed 509 people/animals/things on the silver screen. And you can see every last one in this video.
OK, so things start a little vague, but once we hit Conan it becomes a lot clearer just when someone's ticket's been punched.
Understandably, Commando features heavily.
Arnold Schwarzenegger Kill Count [YouTube, via Laughing Squid]