Even though there are killers on the loose, the kids continue to be morons. So many flaws. SPOILERS: No way would a kid be able to walk after being snapped in a bear trap. Let alone climb stairs. Clearly, parents have never taught the kids about guns or the oxygen tank that keeps their baby sibling alive. First, the daughter can't hear. How does she know if she's knocked something over? Or creaking under her feet? But most important; there's a loud alien monster near!!! Then, she couldn't share her knowledge of how the aliens hate loud, piercing noise with her mom.It seems to me that one would stay put on the farm. I mean, where did all that water come from? What started the fire in the barn/ Aren't those preserves still good? Why leave to the unknown? You already know the loud noise and a blast of fire power will kill the enemy. The horrible daughter who is never grateful, takes the rifle and fishing equipment, and off she goes. Poor Emmett. Wow, did you notice that she ends up clean, in a nice sweater, by the fire, eating with her new friends. Not a worry in the world. Even after she was almost assaulted. Two by-the-ways: of course the black guy is gonna get it and, we now know the monsters can't swim (apparently they can navigate a boat). One more question, but I have many more, why did Marcus put his sibling in the box, using oxygen when they were already in a self-contained environment? I would have posted one star, but I do like Emily Blunt. However, Krasinski, you let me down. I can only hope that Part III doesn't disappoint. Also, the same music from Sicario. PS: the dumbest ending ever, the daughter standing on top of an alien, like some kind of warrior princess. Terrible!