Frustratingly, because the film chooses to concentrate on the action and the premise, it failed to give real substance to its characters and their relationships. A very artificial conflict is created between the dad and his daughter, and it truly feels like it was added into a later version of the script to give some sort of emotional arc to the characters, but the result is clumsy at best, a bit ridiculous at worst.
Additionally, the film fails to create very clear rules on what the creatures can and cannot hear, how they function, how they are able to detect obstacles in their path, how many there are, or how fast they move, are all animals dead, and the list probably goes on. The result is that whatever is established at one point inevitably changes later on to fit the dramatic needs of the story, but it undermines our ability to suspend disbelief. Repeatedly, it feels like the film is doing its best to thrill, even if that means going against the film's internal logic. I understand that this is a movie and sometimes internal logic needs to be sacrificed, but this a became a tough sell after such moments.