Here is the full list of all 8 WW2 Rebuilder: Germany Prologue achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Complete the level with five stars
Put the bell on the tower
Decorate the city
Find all secrets
Eat an apple
Build up a pulpit
Clean up destroyed building with buldozer
Put bricks on a boat and transport them to the other side.