Happy Birthday to Me

Happy Birthday to Me a movie i saw 30 years ago in the theater thanks to my mom i was about 5 minutes late but have seen it more than once.Since i have not seen it in a long time i will put down what i remember.What i remember it was alot different from the other early horror movies i saw for starters most of these slashers not all there was a masked killer.In this movie there was not sort of the killer was masked but not with a halloween mask more like a different face.Another thing that was different was the killer was not deformed and was not a man.The deaths were different not like others where a butcher knife is used all the time or a machete.As for the ending that stays left out as for me liking it yes i did and i hope it comes out on Blu Ray.