Watchmen vs 30 Days of Night
These are the movie versions.
The Watchmen find themselves stuck in Barrow for the winter. They must survive 30 days against the horde of bloodthirsty vampires, or kill them all. Unless specified, no weapons except what they can use from around the town (assuming they survive long enough).
They start in the middle of town. The vampires see them and start running, with about a minute before they reach where the heroes are located.
Scenarios:
1) Rorschach and Nite Owl
2) Ozymandias and Comedian
3) Rorschach, Nite Owl, Ozymandias, and Comedian.
4) Same as 3, but comedian gets a flamethrower and a pistol with 10 rounds.
5) Dr. Manhattan and Silk Spectre