This episode is great. I love the in-your-face showing of the evil beings and the homage to old classics of the alien genre. The special effects are perfect and the setting is great. i don't understand why the alien ship crashes after being, apparently, in the area for many years now. Other than that, the show is very enjoyable, there is not one single moment of boredom because our main characters, a couple, are running all the time from here to there, dodging the lasers from the aliens.
I wish they would have had a better chance at escaping from the town but it was all just to asfixiating for them.