Where do I begin? How do I move to the next stage? What is the Mastery rank? How can I get a new ability? How do abilities work? Where can I see the abilities I've collected? How do I use skills? How do I restore my health during battle? How do I equip weapons? How can I unlock new weapons? How do talents work? How do I upgrade equipment? How do I merge equipment? How do I move to the next chapter? What is the difference between chapters? How do I know where the infected are? Who are the bosses?  What types of quests are there? How does Patrol work? What is Death Chain about? What happens in Wipeout? What is the best strategy in Wipeout mode? What currencies are used in Zombie State? I have other questions or concerns. How can I contact you?