I like the visuals, but I feel like you could've done better. The controls are a bit janky and the design is a bit off. Maybe you need to put the health bar a little lower and bigger, just to give tell that the player has one. Another thing is that the zombies firing bullets a bit too small and quick. Like, I barely can see it and am almost unsure if I dodge it or not.
I see you have potential. Keep making games and do a good work in the future.