Review: disastrous ending 
Sentiment: negative

Review: a potent chemistry 
Sentiment: positive

Review: not a schlocky creature feature but something far more stylish and cerebral -- and , hence , more chillingly effective . 
Sentiment: positive

Review: that by its end offers a ray of hope to the refugees able to look ahead and resist living in a past 
Sentiment: positive


Review: be a bit of a cheat in the end