Bought it a few days ago.
I already completed No Mercy, Dead Air, and most of Death Toll on single player.
No Mercy was funny because Zoey died twice, and the second time I rescued her again only seconds from her death.
Louis also died just as the helicopter was lifting off, I got on first while Francis and Zoey were saving him from a hunter, then they got on only to see poor Louis get smashed by the tank just before I could get off to help him.