Objective 1 : Use the sewers to bypass the enemy lines.

At the sewer intersection, turn left and eliminate the Germans behind the boxes using your Scoped Mosin Nagant. Move to their position and be ready with your PPSh for another German.

Look up at the ceiling opening; Germans will run by and shoot. Quickly eliminate them. Ahead, a German will peek from behind a wall; lie down and shoot him with your Scoped Mosin Nagant.

As you approach the railing, Russians will appear. Avoid shooting them.

Go up the stairs to the right and eliminate the three waiting Germans with your PPSh or other sub-machine gun. Continue around the next corner and repeat the process.

Move to the boxes near the opening above. Use your Scoped Mosin Nagant to snipe two Germans on balconies, one on the floor of a bombed-out building to the right, and one from a window on the left.

Proceed through the opening. Upon re-entering the sewer, look left and shoot the two Germans running through.

At the tunnel bend, stay close to the wall with your Mosin Nagant. Snipe the German who appears on the balcony on one side, then do the same for the other side. As the second German falls, look towards the end of the sewer for one or two Germans approaching.

Go up the stairs ahead and through the sewer tunnel. After passing through the next hole in the wall, you'll find a squad of Russians fighting Germans. Assist them. Then, move around the next corner.

Shoot the German soldiers behind the sandbags ahead with your PPSh. Look in the direction they came from and snipe the two or three Germans who appear, using cover.

Proceed through and face another squad of Germans. Ignore the first German who runs past the first hole in the wall. Wait with your gun pointed there and shoot the next German who comes through. Eliminate the remaining Germans with your Scoped Mosin Nagant.

Reach the end of the passage and go up the dirt incline. Halfway through, a German will shoot from behind a box. Either rush him or take cover and shoot him with your sniper rifle.

Move around the boxes and the corner. Two more Germans will line up; snipe or machine gun them (sniping is easier). Then, move through the hole in the floor.

Two Russian comrades are fighting German snipers and machine gunners at the end of this sewer tunnel. Help them, using your Scoped Mosin Nagant to take out the snipers. If a grenade is thrown, fall back and resume fighting after it explodes.

Once all enemies are down, enter the building and find the hole in the floor to complete the mission.