It’s a challenge campaign, so of course it’s difficult.
But there’s an art to difficulty and this is not it. And no, this isn’t the salt talking.
This campaign is horde after horde after horde after horde, and when it isn’t doing that, it’s doing something else that’s utterly stupid.
It’s one thing to spawn specials on top of you because you dared to open the wrong door. I hate this shit in vanilla Left 4 Dead, it’s certainly not any better when it’s done here.
The final nail is on the penultimate map. Specifically, there’s a room filled to the brim with witches. Crowning them is basically a game of Operation - you’re either perfect with it, or you’re dead. By the way, this comes after trudging through a stupidly difficult section with no ammo.
It’s not ridiculously challenging to a fun degree. Quite the opposite, and unless you’ve got some mod that turns the survivors into overpowered gods of war, this isn’t for you.