After close observation there is indeed blood on the walls after you shoot an enemy, but it disapears so damn fast just like the bodies. I say bring on the gore mod
I am running at 1024*768 with everything turned up and I have noticed that when you shoot an enemy up close to a wall it doesn't leave any blood marks on the wall. I'm just wondering if this is an issue because at least in Doom 3 this wasn't a problem. Overall I'm really enjoying the game.