The reasons are: acting, for such a movie is better than one might expect. Tho it looks cheap the actors did their job as good as they could and they deserve a point for effort. Second the plot, tho used since the 90s, has an overall, almost decent execution, it can stand for a horror, especially if you're not into this type too much. The killings are rip offs and repetitive but you do get to see them, and not too many low budget horrors show you the actual death of a character. And lastly, the costume is interesting, got my attention and I did wanted to see it more often.
Little else to say, it's a movie that has been made since I Know What You Did Last Summer, and it isn't the greatest copy cat out there, so no, I will not recommend it, but I have to say I've seen far worse. Did I enjoy it, had some fun, or managed to fill my 1.5 hour in a productive way? Don't think so.
But if you just want to see a horror movie because you love this genre and have to see all you can see, this might even seem like a little flick compared to others.
Cheers!