Here is the full list of all 19 WW2: Bunker Simulator achievements.
Complete the tutorial.
Kill 25 enemies with a pistol.
Kill 50 enemies with the machine gun.
Search 5 bodies.
Search 25 bodies.
Search 100 bodies.
Destroy 5 enemy tanks.
Kill 50 enemies with a pistol.
Kill 250 enemies with a pistol.
Kill 150 enemies with the machine gun.
Kill 600 enemies with the machine gun.
Destroy 10 enemy planes.
Destroy 40 enemy planes.
Destroy 150 enemy planes.
Destroy 25 enemy tanks.
Destroy 75 enemy tanks.
Kill 5 enemies with an ax.
Kill 25 enemies with an ax.
Kill 100 enemies with an ax.