Capcom: No plans to add co-op to Revelations HD’s campaign

Capcom has no plans to add co-op to the main campaign in Resident Evil: Revelations HD. However, you’ll still be able to team up with a friend through the game’s Raid Mode.

When asked about the possibility of co-op in single-player, a Capcom marketing staff member said:

“At this time it’s not planned to add co-op to the campaign side of Revelations.”

Source