The story and writing is pretty nice, and dialogue continuation buttons are there to compensate for a lack of options. There are, however, instances where you through the dialogue system/box make choices, that either impact your character or the city you're defending.
Sound design is minimal yet satisfying. Zombies groan quite a bit, although I haven't noticed any variation, there are some variable factors that introduce new zombie groans, or should I say moans. The MC moans during intercourse as well, in which there's quite a bit of variation. During those instances there are also dialogue for every continuation.
The mechanics are simple, nice, yet have their challenges. The weapons are varied to a pistol, rifle, and a shotgun, which all can be upgraded, at either the cost of currency or reputation. The pistol is mediocre at best, and it's accuracy is terrible. How good it gets fully upgraded I know not, but it does compensate a little by having unlimited ammo. Rifle excels at all ranges, while the shotgun excels short and mid-range.
The graphics are nice, although it's not like they're of UE5 quality. I did question some of the zombie design in regards to their internal anatomy, as some of the zombies have their spine exposed to a large degree, and parts of muscles, fat, etc. missing, which would probably render the zombie immobile or at least partially immobile.
Overall the game is actually pretty decent. I'm excited to see future progress.