You are the leader of a group of survivors, and you have to cross the infected city, where zombies outnumbered the humans! Try to reach the safe area as you run your trolley and shoot all zombies! Don't forget to collect the coins with your mouse, you'll need to buy new abilities and guns to complete your mission.
Kill all the zombies that are coming your way and survive all zombie waves. Upgrade your weapons to have a greater chance of survival. Enjoy!