I actually thought you had to beat the game on professional to unlock no hope.
Supposedly that's what the guide says but it isn't unlocking for people. Besides it's right there in the notes the guy posted so...obviously you can either unlock it by playing Pro and it's just bugged or it's a DLC exclusive Mode that can't be unlocked yet.
Playing - Demon's/Dark Souls, Monster Hunter FU, Resonance of Fate, Devil May Cry HD Collection, Morrowind, Katamari Forever, Resident Evil 6 PSN: DocDelicious
This all sounds pretty good but I wish they just included this with the game. It probably would have helped some people feel better about the game at least. Its still crazy they haven't made a horde mode either. I thought it was pretty damn obvious even in re4 when you get stuck in the house with luis.