I want to say the movie came out in the 80's or 90's because i think i saw it before 2000 on HBO or the like.
I don't recall much of the movie but some text that comes on the screen and part of the end. As well as some other details
The text in the beginning of the film said something like Friday the 13th is bad Saturday the 14 is worse.
The end I remember is a person (can't remember if it was male or female) climbing up a concrete wall with a line of barb wire, they were the only survivor
I do remember that it was teens/college kids. It was a rundown house.