Here is the full list of all 16 War Mines: WW2 achievements.
Complete the 12th stage.
Complete the entire game in less than 60 minutes.
Complete the 11th stage.
Find (and click) two dogs lost by the scenarios (one dog in each scenario).
Complete the 10th stage.
Complete the 9th stage.
Complete the 8th stage.
Complete the 7th stage.
Complete the 6th stage.
Complete the 5th stage.
Complete the 4th stage.
Complete the 3rd stage.
Complete the 2nd stage.
Complete any stage without marking any mine.
Complete the 1st stage.
Complete any stage without using the hint.