Decoys 2: Alien Seduction 2007

Sam, a college student in a small Northwestern town, reluctantly joins his roommates in a contest to see who can hook up with the most gorgeous co-eds by the end of the semester. But when men slowly start disappearing around town, he and his friends learn that when it comes to beautiful women, it’s what’s inside that really matters. In the end with the help of Luke who survived giving birth to an alien in the first film, he and his friends go after the aliens. One has a flare stuck in her and burns to death, another is forced backwards by a makeshift flamethrower and falls into a fuse box that electricutes and kills her, Sam and his Stefanie drive another into an incinerator in an old morgue and Sam activates it buring her to a cinder and the last one which looks exactly the same as Constance (she explains that that Constance was in fact a clone of her) from the first film defeates Luke, Sam and Stefanie but Luke's psychiatrist arrives to take him back to be strapped down in bed (Sam helped him escape) and upon seeing the alien injects her with something weakening her and Luke drops a lighter in a puddle of liquid from a makeshift Molotov Cocktail that she's standing in igniting and killing her. Sam and Stefanie kiss as the rest of the group show up and apparently decide to start a relationship. The group including Sam's other friends go into a nearby room where they find the alien womens' victims still alive and go to help them but the alien babies they are impregnated with burst out and the movie ends with the entire group apparently being killed by the alien babies.