The Red Army has now advanced to Berlin and now attempts to gain control of the city. In the beginning, inside an abandoned building Reznov will ask the player if they are ready to fight. When the player reaches the next room, a German will be executed by a Russian, but the player can shoot the German dead on the spot. After this, the player moves on through into the next room in which a German is desperately trying to call for help on a radio. They'll then notice the player and his squad, and a firefight ensues, where all of the Germans in the room are killed. In the next room, a Russian can be killed if the player doesn't shoot the executing German in time, but the other Russian with him will escape once the player and his squad advance and kill the Germans inside. Sgt Reznov's squad fights through this building and enters the street. There, the player is told to kill all Germans in the streets, although the tanks will take care of most of them. The army continues the fight through the street to a metro entrance. Reznov tells the player to kill all the wounded Germans on the street, but they can be simply ignored. When Reznov's squad reaches the metro, three Germans attempt to surrender. The player has a choice to kill them or not. If deciding to kill, Reznov will compliment the player on their mercy ("Dimitri understands the nature of mercy killing"). If not, the allies will light them all on fire with Molotov Cocktails. The Soviets then use Katyusha rocket artillery to crush the defending Germans and start making the area a danger zone, thus, the squad enters the metro as a last resort. The metro's lights are off, and Reznov tells the player to stay in the metro and wait for the lights to pop on. Reznov attempts to open a locked door after clearing out lots of Germans in the metro, while the player keeps the Germans off. All of a sudden, a loud screeching noise is heard and the subway is flooded by the Germans in a desperate attempt to kill the Russians. The level ends with the player submerged in water, quite similar to Vendetta.