The Leaderboard was added to the game and it will now track the number of zombies kills while playing !
You can see your zombies kills count and compare it with others players from the menu or from Steam here https://steamcommunity.com/stats/1175640/leaderboards/3905971/
The game scoring system was also resigned around zombie kills to unlock parts of the game.
Reworks were also done on the user interface to have less elements displayed on the screen and more space to focus on the actual gameplay.
Hoping the game will be more fun, you may have to replay to unlock the features with the zombies kills count instead of the classical score !