It's pretty decent as far as creature horror goes, but I had a few issues with the survivalibility aspects of the family at times. Some seemed rather well thought out, while others seemed to be kind of randomly or superficially prioritized. It's still a fun movie though, and i'd easily recommend it.
Spoiler...
Why go through the trouble of going barefoot through all of this? Apparently nobody thought of using foam cushion or comparable padding of some sort tied or fixed to the bottom of shoes as a sound buffer. I think this approach would've been even quieter than going barefoot. Call me old fashion, but post apocalyptia is really no place to be going shoeless for any length of time.
Also, nobody seemed to use rocks or other throwable items on any kind of consistent basis as decoy devices. How would this not be your number 1 go-to device in most every situation where you're pitted against blind creatures that only act on sound. I'd have had no less than a dozen throwables on me at any given time.
I understand the sign language aspect throughout the flick due to the daughter being deaf, but they kind of over played it a bit. Soft whispers or speak probably would've been fine in most situations when you consider how much noise they usually made shuffling around the place on a daily basis. I don't think a soft low voice face to face would've pied pipered any creature action.
The mother hides out in the bathtub but doesn't have the sense to close the bathroom door? Apparently the creatures have an aversion to peeping into showers because that's where the mother finally ended up. Maybe she crawled to the shower after the creature left as a final hiding place waiting for help. Either way - her not closing the bathroom door to begin with was kind of stupid.
The daughter is free to wander off like that? She might not have been allowed - but it does kind of seem like there was little effort to keep stricter tabs on the chillins whereabouts at all times.