I'm not sure if I've given my thoughts on this VN yet, but here I go.
Overall, the basis for this story is quite unique within the furry visual novel community. The writing style is quite bland, but it suits the story well enough. I enjoy the somewhat original take on zombies, even if I wish it was a different version of an apocalypse. The MC is also extremely bland and has zero personality. I still enjoy the VN tho. I've noticed around 8 typos in the 3rd build that need to be fixed.
One complaint I have with the latest build is that Xavier's monologue near the end feels extremely forced and out of character. It genuinely just feels like the author spouting a bunch of nonsense, and not the character trying to explain his mental ills. Mayhaps, you should rewrite that section to sound more natural and in character for Xavier.
In conclusion, I'd give this VN a 3/5. Also, I'll attach my playthrough of the game here: https://youtube.com/playlist?list=PLs_BZI-CHxZw45igG8Sw4WUJx5-k95nkp
-Kallier