The mechanics are easy a average human gets a 1 or a 2 on a D6 to do anything. Some skills they are better at get a increased range or a 1-3 on a D6, in two skills they are really good and get 1-4 on a D6. Think of that in a board games terms you need to roll at or under the number on a D6.
The B-MOVIE STAR POINTS are how popular the victimas and monster are they are not recovered at some point they are meant to die or something else. Well the MONSTER may come back in a sequel. Since girls are more popular they are TOUGHER. And doing things that are sexy and make the movie better adds a bit.
To lose one the two sides will roll off if one succeeds and the other doesn't the loser loses a B-MOVIE STAR POINT, if both succeed you roll again until one wins. Of course the monster being a big monster has several advantages. First he gets skills and a few areas he has a 1-5 on a D6 to succeed. He also gets four powers. But he can be worn down and if you drop to o B-Movie Points you (Die) and it leaves room for the Son of the Camp Moonlake Monster or Camp Moonlake: The Rebirth. lol
Humans can come up with plans that increase the chance of hurting the monster but only one person can roll. Townsfolk won't die and the monster can control two he might have two local women as mates that are running around like tramps or something and can be fought. Townfolk though will have 1 less B-Movie Star Point they are extras or lesser stars. But the local Sheriff might meet the monster and have a shootout with it. Before getting killed. lol
Remember skills have to fit the genre and character like a hot bodied older teenager could have Varsity Cheerleader at a Master Level and might be able to do acrobatics and cheer to keep the monster happy so she is not raped. A jock (her boyfriend) might have First Strike Pass-Rusher and could do big tackles and resist being knocked over. A expert based on the genre might have EX-SECRET MEMBER OF THE ORDER OF MONSTER HUNTERS TURNED TABLOID REPORTER and well would be good at theorizing, making articles that are popular and might have some skill at fighting. Just be pretty outclassed.
As for the monster its up to you can be a demon, alien, genetic mutation or something else just must be a monster out to breed with women especially a virgin- hell that isn't even important.