Resident Evil 6 features an unlockable fourth campaign and new Agent Mode

Japanese gaming magazine, Famitsu, has revealed this week that Resident Evil 6 will feature a fourth unlockable campaign and a new 'Agent Hunt' mode.

The fourth campaign, which will feature Ada Wong as a playable character, will be unlocked once the three main campaigns of the game have been cleared. In an interview with Famitsu, executive producer Hiroyuki Kobayashi shared a few details about Ada's campaign:

"Ada's story will clear up the mysteries from the other scenarios," said Kobayashi. "Her scenario is played solo, without a partner character. When playing as Leon and the other main characters, you may end up encountering other players who are controlling Ada."

Another feature, which will also be unlocked by completing the main three campaigns, is a new mode called 'Agent Hunt'. In Agent Hunt players will be able to take control of the AI-controlled creatures and enter other players' games via online play, the main goal of which is to defeat the player-controlled agents.

Players will be warned when a human-controlled enemy enters the game, but will not be told which creature is being controlled. When multiple players invade the same game they can also use voice chat to strategise with each other.

The Agent Hunt mode will include its own leaderboard and can be turned off at any time if you don't wont other players invading your game.