You gave up too soon mate, after round 6 it gets crazy and after 10 total mayhem lol. But nevertheless a big thank you for playing and giving feedback.
I'm actually thinking about doing a whole rework of the game and turn this into a co op game made with my own art assets.
and here is the link to the assets I used in case you want them:
https://free-game-assets.itch.io/free-tds-tilesets-buildings-and-furniture
https://opengameart.org/content/animated-top-down-survivor-player
https://opengameart.org/content/animated-top-down-zombie
What I did was changing the shirt color of the zombie to make a stronger and faster type of enemy lol (blood zombies as I like to call them lol).