Nice little zombie shooter game you have here! was fun to shoot at zombies trying to come in through the windows. I loved the artstyle and the animations especially for the player character. THe shooting was also quite satisfying and the UI was quite clean and intuitive.
On the gameplay i felt that adding more variety in terms of either types of enemies or weapons with some sort of upgrade system would definitely add depth to it. I lilked how you had to block the door with the sofa before you called the zombies, but it felt like an unnecessary friction the more i played. The radio mechanic was neat though, well done on that.
Adding a bit of feedback when the house loses help would go a long way in adding polish to it ,something like a simple screenshake would also work and some sfx.
Overall its a nice entry and looks great, A little bit of polish and adding variety in the gameloops would go a long way. Well done :)