Back 4 Blood campaign trailer shows off little bits of gameplay alongside some more story details for the game. Viewable below, the trailer presents a bit more about the campaign mode itself, and opens with a cinematic that shows how the zombie-type infection started, with a worm.Actually called the Ridden, these creatures come in all shapes and sizes, from the Reeker, which is slow-moving and explodes upon death, to the Tallboy, which charges at players and uses its massive arm to smash the