I recommend more simplistic graphics for this game, it's a good concept that I've seen many times, but it usually plays out better in simplicity.
if you wanna make a game like this in a higher graphic way, I would still recommend a more simplistic style like pixel art.
an example of this done well is a game I used to play in middle school called "Crazy Zombie", there was a few of them but my favorite was "Crazy Zombie 2.0"