I play a bit of this (In offline mode), sound fx and graphic effects are pretty nice, especially that inroom sound echo, I love that. Problem is start at second map and next map are pretty empty, only floor, wall, zombies and player. Also have some wrong detail, like hold a pistol like hold a rifle, pistol attached suppressor but still have flash and louder sound, that is wrong point...Also don't have save/load checkpoint, this system is necessary and make little tutorial, no one know that crosshair's colo...