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

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

As Germans run by overhead, shoot them through the ceiling opening. Ahead, a German will peek from behind a wall; lie down and shoot him with your Scoped Mosin Nagant.

When moving forward to the railing, be aware of Russians who will appear. Avoid being surprised and engage them.

Ascend the stairs to the right and eliminate the three waiting Germans with your PPSh or another sub-machine gun. Proceed 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 in a window to the left.

Enter the opening and, 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 side balcony, and do the same for the one on the opposite balcony. As the second German falls, look towards the sewer's end for one or two approaching Germans.

Proceed up the stairs and through the sewer tunnel. Through the next hole in the wall, you'll find a battle between Russian and German squads. 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 to find two or three more Germans. Use cover and your Scoped Mosin Nagant to snipe them as they attempt to do the same.

Continue through and face another German squad. Ignore the first German who runs past the initial wall opening as he is difficult to hit. Instead, wait and shoot the next German coming through. Engage 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. You can either rush him or take cover and shoot him in the head with your sniper rifle.

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

In the next sewer tunnel, two Russian comrades will be fighting German snipers and machine gunners. Help them by using your Scoped Mosin Nagant to eliminate the snipers. If a grenade is thrown, fall back until it explodes, then resume fighting.

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