So far, this is a pretty successful horror story. Although because of the lack of AU tag, up until I saw the last two chapters with Twilight Sparkle, I assumed it took place in the future, given the access to technology such as guns and radios, and it really does seem like an AU setting because of that. Anyways, the part I like most about the recent chapters is that we're finally learning about weaknesses that this threat has, in terms of eyesight being needed to be captured by it. If it was some inexorable, hopelessly unbeatable force, as I was starting to wonder before these chapters, that would be way less narratively interesting, so I'm glad it has been revealed to have just enough in the way of weakness to give some grim hope.

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Thanks. Hope you enjoy it!

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Good point. The story takes place in a post-war setting similar to Equestria At War. This is not explicit anywhere, but it may be more clear and/or relevant in the future, so I've added the AU tag.

And thanks for the other feedback, that's great to hear!