This game is using Flash! After the 31st of July 2019, your internet browser might start blocking Flash, especially if you use Google Chrome. This means you'll have to activate it to play this game.
Kill all zombies by anything you have,drink tequila to power up and remember to take guns whenever you see it. Surviving after waves is not easy, you have to get as many items as possible to upgrade your ability and weapon's power. Good luck!