Review Detail of NOYB in When Doomsday Comes, I Can Upgrade My Refuge Infinitely

So for what I assume is a first try by a non native speaker or resident to write a story about America in English its not bad. I feel like it would be better set in the writers country and better researched about things the writer has no experience of such as guns. Honestly the weakest part of the story is bad charecter development and making up way to many things that even 10-15 min of research would show were ridiculous. I'm gonna drop it but I think the author could do better with more experience.