How To Unlock Multiplayer Mode
To unlock Multiplayer in One Punch Man: A Hero Nobody Knows, you’ll need to progress through the story until you have completed both Chapter 1 and Chapter 2. Once you’ve completed those chapters, you’ll be able to take the bus to Association HQ, where one of the receptionists will grant you access to Multiplayer.
If you need help with making your way through the campaign, be sure to check out our Walkthrough section, which contains all the information you need to get started!
Unfortunately, while completing Chapter 2 will grant you access to Training Mode, Online Multiplayer and Local Multiplayer, you’ll also need to unlock playable characters, as only a small handful (including Silverfang, Crablante, Vaccine Man, the Player Avatar, and the Tank-top heroes) are available by the end of Chapter 2.
To unlock new characters, you’ll need to meet and complete missions with them as you play through the story mode. This means completing Chapters (which you can learn more about in our Walkthrough), Side Missions, Quests, and more.
If you see a character from the show out in the world, talk to them and see if you can do something for them. Forming a friendship will unlock them for use in Multiplayer.