Don't listen to the guy below me, I will make a review, without mistake.
First off, the atmosphere had me a bit spooked; the lack of music is creepy and the emptiness of the world didn't leave anything to be desired - it actually added to it. As for the NPC's, they were just enough..who's to say that an NPC has to do anything? They're their own person. If I had to nitpick, I would just say to make it longer because my friend wanted to watch me play it longer, too.