Firstly, i'm glad to report that the movie isn't solely set inside a house, it does have quite a bit of outside action and has more of a Walking Dead type feel than Cloverfield Lane but is it worth the praise? Not really, Joel Edgerton is good at playing the paranoid father who will go to any extreme lengths to protect his family and there is this genuine, awkward feeling throughout the movie that grows to almost unbearable tension but it never really explodes, despite a brutal ending.
Kelvin Harrison Jnr is great in his role as Travis, the son of Paul (Joel Edgerton), a kid suffering from severe night terrors after witnessing the death of his grandfather, he brings a kind of melancholy feel to his character, who tries to remain up beat even when things start spiralling out of control.
The movie definitely relies on atmosphere rather than visual scares and it's psychological trappings will play on your mind long after the movie ends but i never really related to any of the characters enough for their fate to bother me.