Great entry, the zombie apocalypse setting could really fit in an rpg and the characters had their charm. I have some issues with the graphic style thou, specially the use of different scales of pixel art in some of the assets and the use of different art styles in fighting mode, maybe using the same zombie sprites could be a better fit. Another aspect that could improve the game is making the scenery more intractable, like checking under the bed and the trash for some survival items.
Nice entry overall