I enjoyed your game quite a lot! I thought the two phases were split nicely and they both felt different and satisfying to play. Some added visual indicators could add a lot of quality of life, like a box around the zombies showing their range at a glance. Same for your weapons, like hovering over a card could show its attack area.
I found your game through the Pirate Software discord, thank you for sharing it and I hope you are having fun making it.