Start by selecting your preferred mode from the variety of modes. Select your weapon and modify it with attachments for better performance. Walk through the underground passage using the joystick. Target at zombies using the crosshair and attack to defeat them. Endure as long as possible in the endurance challenge or compete against opponents in Team Deathmatch. Pick up weapons scattered around the map to keep fighting. Cooperate with friends in multiplayer mode to win the match. Adapt your tactics based on the type of match and enemy behavior.