Consternate (2000)

When Tyler McKenzie's parents go out of town, he decides to throw a giant party at his house. During the week leading up to the party, Tyler's best fried Chris ends up missing. While Tyler and Chris' girlfriends attempt to hunt him down, nothing will stop Tyler from planning his massive party. One by one, Tyler's friends are killed off, leading up to final showdown between Tyler and the person who has been killing all his friends.