Petrenko survives an attack along with Sergeant Reznov, without being noticed. After a depressing scene of the execution of Petrenko's comrades at Red Square during The Battle of Stalingrad, you gain control of Petrenko and crawl near to Reznov. Both of you proceed to crawl to a small opening in the fountain and Reznov tells you about General Heinrich Amsel, who is the architect of this mass murder.
Reznov cannot shoot as his hand has been injured, so you must take his place. Reznov does not let you shoot Amsel yet, due to the fact that he does not want you to give away your location. After Amsel walks into the building, Reznov orders you to take out his guards while some bombers are flying overhead to drown out the noise of the shots.
After all of Amsel's guards are killed, you follow Reznov. He will lead you through a cafe, and explain how the deserted city used to be crawling with people. While entering another building, Reznov is nearly shot by a Wehrmachtsniper. Reznov jumps through a window, breaking it, and you proceed to follow him. You then ascend a staircase inside the building, and begin a frantic battle with the enemy sniper. After the enemy sniper is killed, you must move quickly before the German soldiers storm the building investigating the shots they would have heard.
While escaping, a German soldier and an attack dog outside the building discover Reznov and Petrenko's location, and the soldier warns his patrol, who attack the building with flamethrowers, trying to burn you out. You must go prone and crawl past the flame-throwers, run up stairs whilst doging the bullets of the enemy soldiers now surrounding the building. Once upstairs, a large flaming beam from the ceiling of the burning building falls on Petrenko. Reznov assists Petrenko, and the two then jump out of the top floor, only to be attacked by three more German soldiers, one of which brandishing a flamethrower. Luckily, reinforcements arrive to support Reznov and Petrenko. You then find a higher vantage point in another building to provide sniper support to your allies below, who prepare an attack on the Germans waiting in the next street.
After killing the few Wehrmacht troops who attack while keeping pace with your comrades, you then proceed to kill Amsel. Because of the battle taking place outside his building, Amsel will try to run to his car. You shoot the driver and Amsel runs on foot. When Amsel is shot, Reznov explains that their allies' death was not in vain, only to be attacked by a squad of German soldiers who storm the building they are in. The mission ends after Reznov and Petrenko both jump into a canal to escape.