Oh, you're the one going around reading evaluations! I read the latest three chapters of Hordedoom (143, 142, 141) and went back to read the first three chapters! It is quite interesting how the genre shifts from what appears from modern day mutant horror into fantasy warfare, so much that I took a break from my own writing to write this!
First off, the latest chapters are more 'war-like' in nature. I cannot pinpoint an exact source, but I would guess it draws inspiration from Azeroth, since glaives, shamans, blinking (hayai lol), horde, Jaina Proudmoore give me that feeling. I really enjoy the depictions of the brutality of war, even from the small snippet of the entire story that I read.
I note that the language in the 'war' chapters are more bombastic and straight-forward than the 'science' chapters. While the scientists spoke eloquently, the commanders speak in exaggerated and more 'direct' fashion. I think a younger reader might appreciate it as it is! For me, old memories of WCIII-style writing came back to me and I smiled.
If I could pinpoint a strength that is common in the latest three chapters and the first three chapters, it is that you are able to make a reader 'feel'. The last three chapters speak of war's senselessness, of heroism and valor; the first three chapters spoke of horror of betrayal and ethics in experimentation. While I can see the line between small-scale fights that lead into war, I'm not sure how one led to the other, if I ever have time, I'll read to find out!
You dropped the stilted sentences from the first chapters. There was a quirk in the early chapters where you create tension by using short sentences at the start of the paragraph, understandable since war is vast and overreaching, just a small writing quirk that I noticed!
EDIT: Accidentally pressed enter, maybe writing gods want me to write? Anyway, one last note is that the betrayal felt cutting in the first three chapters, you did well building tension to the cutoff when 'Mother' does a heel turn, I expected it, but it still hit! I like it! Academic could be a little less verbose and explainy, but I suppose that's her job. Orange-demons reminds me of D-Class prisoners from SCP, hahaha!