I can hardly rate this, because it is a flash fiction, so supposed to be short, and the main idea is not that bad. I understand that this is a kind of miniature interactive fiction, but some more actions and implementations should be there. I mean, the title of the game lets the milk coffee become an object of the scene, the room description mentions milk coffee, so I examine the milk coffee -- but no, I cannot see any such a thing! There is hardly any interactivity because the game/story consists of inactivity.
My first impression is not that bad, the story is okay and the writing sufficient. Unfortunately the coding is not complete (error messages because answers to a verb have not been defined), and synonyms are not implemented (Spoiler - click to show)(you discover that the top of the container where you start is a lid. "push lid" results in the reply that there is no lid, "push top" then works and the reply is "you push the lid", which is contradictory). This game should be revised, the start is not too shabby.
It seems to me that the writer came up with the idea of a zombie apocalypse, created a room with some items and a little puzzle how to exit it, then he created a vast area with room descriptions (and the writing is not that bad at all), and then stopped continuing. Most of the things mentioned in the room descriptions are not implemented, some exits mentioned are not further pursued. It is simply unfinished, for whatever reason: maybe the writer lost interest, maybe he did not have time anymore. It is still not justified to label it as a "beta". It should not have been published in the current state.
It is much better to have a smaller game with a tight story and maybe just a small amount of locations than an unfinished code that presents many locations and details and the promise "have a look, this is unfinished, but will maybe become awesome one day". People who visit this database want interactive fictions, not a text that could become an interactive fiction one day.