Here is the full list of all 16 Farming Simulator 15 achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
You have found all 100 gold coins.
Your wealth has surpassed $10 million.
There is more than $5 million in your account.
You have found 50 gold coins.
Your account has reached more than 1$ million.
You have completed 50 missions.
You have found 25 gold coins.
You paid back the entire bank loan.
You have harvested more than 100 hectares.
The total area sown by you exceeds 100 hectares.
Your playing time in a single savegame has reached over 10 hours.
You have harvested more than 10 hectares.
You have sown more than 10 hectares.
Your total driving distance has increased to over 1000 mi.
You have covered more than 100 mi with vehicles.
You managed to reach a negative balance on your very first day.