A poisonous gas accidentally leaked during a large-scale biological experiment, severely polluting the global climate. Only a few people survived after becoming infected and turning into zombies. It is currently impossible to develop an antidote. Some warriors can only continue to kill zombies in order to protect the few survivors. These warriors are known as apocalyptic heroes. Assist the warriors in upgrading their weapons and mounts, as well as using powerful skills and props to combat the enemy.
