Typically unlocked by getting an A Rank or higher in any Mercenaries map with that character.
Unlike the original PlayStation 3 and Xbox 360 releases, the Switch version bundles all multiplayer modes (Onslaught, Survivors, Predator, and Siege) and map packs directly into the base game from the start. Avoid Malicious Cheat Links and Generators resident evil 6 nintendo switch cheats link
Navigate to the marketplace area where you search for three keys. Typically unlocked by getting an A Rank or