Mission system grants Reputation, Resource, Experiences, and Items. Those rewards will improve players from the beginning to the end. 

　　There are three categories of mission.  Story Mission, Daily Mission, and Activity Mission Completing story mission grants large amount of commander experience, resources, and high-end soldiers. Completing daily mission grants few amount of commander experience and large amount of reputations. Completing activity mission grants gold and items. 

1. Story Mission

　　There are three subcategories of story mission: HQ construction mission, roleplay mission, and resource production mission. 

　　Construction mission is related to HQ development and troop training. 

　　Roleplay mission is related to clearing stages and reputation mission.   

　　Resource production mission is related to achieving a certain amount of resource. 

2. Daily Mission

　　Daily mission is categorized by difficulties ranging from 1-star to 5-star mission. Tougher mission grants better rewards. What if there is no tougher mission showing? No worries. Spend 5 Diamonds to refresh daily mission. However, you can’t refresh missions you have chosen and not completed. You can only complete 5 daily missions per day, or you can spend 50 Diamonds to get 5 more daily missions. 

3. Activity Mission

　　Completing activity mission grants activity points and you can redeem rewards with those activity points. The more activity points you get; the better rewards you will be given. Although there are many activity missions, don't worry about it because you will also finish some activity missions while you complete daily missions.

　　Above paragraphs describe the mission system in 《Day of zombie》. Take time, capability and rewards into considerations to maximize your output.