Depending on the player's actions through the game, Chernov either disdained Dimitri, viewed him in a more conflicted light, or acknowledged him as a true hero. At the beginning of the level ' Downfall', Reznov (in a voice-over) read a portion of Chernov's diary, discussing Dimitri. Reznov sympathetically took the dying Chernov's diary, saying 'Someone should read this', in a blatant reversal of his earlier statement. When Chernov reached the stairway leading to the Reichstag entrance, he was torched by a flamethrower-wielding German and fell to the ground coughing and burned. Reznov then took his diary and said to Chernov, 'Which do you think will lead us home? Writing about this war, or fighting it!? No one will ever read this! If you lack the stomach to kill for your country, at least show me you are willing to die for it!' Chernov then took the Red Army flag with him and fought through German infantry defending the Reichstag. After surviving the tunnel flood, Chernov was seen trying to dry off his diary.

Chernov, Reznov, and Dimitri barely escaped with their lives when the metro they were in was flooded by Germans in an attempt to kill the advancing Soviets.

After Dimitri decided what to do with the Germans, they entered the metro, and fought until they got to the end of it. In the beginning of the level ' Eviction', a group of Soviets killed a German soldier that was begging for mercy and Chernov said 'This is not war, this is murder!' After ferocious close quarters fighting in a building, and after battling the desperate German troops on the city streets, the squad reached a metro in which three surviving German troops begged not to be killed. He and the others then boarded the commandeered train bound to Berlin and pushed the Germans further into the German Capital, Berlin, and eventually reached the city itself. Reznov responds by handing Dimitri Petrenko a Mosin-Nagant rifle, saying, 'Then maybe our friend here, will help them (the Germans) to bleed faster.' After rescuing Dimitri, Chernov, and the others pushed into the German countryside, clearing a barn and a nearby German camp. When Reznov ordered Chernov to execute the dying soldiers, he displayed a pacifist nature by refusing to shoot fatally wounded German soldiers that were already bleeding to death. Chernov first appeared in ' Their Land, Their Blood' as one of the soldiers under Sergeant Reznov's command, and with the latter rescued Dimitri Petrenko from three Germans.

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