Destroy 25 enemy planes.
Destroy 10 enemy planes.
Destroy 5 enemy planes.
Search 75 bodies.
Kill 75 enemies with pistol.
Kill 50 enemies with pistol.
Kill 75 enemies with machine gun.
Kill 25 enemies with pistol.
Kill 50 enemies with an ax.
Kill 50 enemies with the machine gun.
Kill 25 enemies with an ax.
Kill 25 enemies with machine gun.
Kill 5 enemies with an ax.
Search 25 bodies.
Complete the tutorial.
Search 5 bodies.
Destroy enemy tank.
Destroy 5 enemy tanks.
Destroy 10 enemy tanks.