Embark on a secret government mission to destroy the enemy database. You appear behind enemy lines, surrounded by a large number of enemies. From the weapon you have only one pistol and 10 bullets.
Use exploding barrels to save shots. Lure the enemy closer to them and shoot. This will kill all the soldiers with one or two bullets.
Collect weapons from dead soldiers and continue your infiltration into enemy ranks. Follow the map in the upper left corner. It shows you where you are and where to go next.