the movie should be able to reach score 7.00 at least.

As I remember, I've seen this movie twice..
the first one, I didnt take seriously.
the second one, after watching many horror, I realized that this one is better than many movies out there..
Even the worse movie like the purge, red state, darkroom, etc get higher than this.
Okay, the acting was not good, but they made the right decisions in the right time.
while other movies only showed dumb people screaming around waiting to be killed.
the death is magnificent.,
this is obviously underrated,,