Stalingrad, in a state of disarray.

German patrols are looking for survivors and then simply finishing them off on the spot. Our protagonists, Peter and Sergeant Reznov, were spared. On the battlefield, listen to the veteran. Follow him, take the sniper rifle as instructed and eliminate the enemy in the street, remembering to wait for the sound of aircraft or artillery to pass overhead to muffle the sound of the gunfire (cos the film Vasily at the end of the city?) After that follow Sergeant Rezernov all the way, on the way you will encounter German flamethrowers burning houses, press Ctrl to creep forward, here just follow the veteran and don't make too many small movements. Reach a broken window and find the German sniper, make sure you spot the other side first when the sergeant rolls out the dummy or you'll be depressed later.