Here is the full list of all 22 Der Milchbauer achievements.
Play the entire game
Play the entire game while making a profit of at least € 1,000,000
Purchase five cows
Purchase 200 cows
Sell five calves
Sell 100 calves
Sell 500 calves
Feed your cows for five months
Feed your cows for 20 months
Feed your cows for 100 months
Let your cows produce 5000 liters of milk
Let your cows produce 50,000 liters of milk
Let your cows produce 1,000,000 liters of milk
Sell 10,000 liters of milk
Sell 200,000 liters of milk
Sell 2,000,000 liters of milk
Inseminate one cow
Inseminate 10 cows
Inseminate 100 cows
Earn € 5,000
Earn € 20,000
Earn € 100,000