Here is the full list of all 34 Farm Frenzy 4 achievements.
For completing every level with a gold ranking
For completing the game
For not allowing a single animal to starve while playing one level
For unlocking every character
For playing Farm Frenzy 4 nonstop for 12 hours
For purchasing ten animals of one type in a row
For fully loading the storage five times in a row
For playing Farm Frenzy 4 nonstop for one hour
For purchasing one animal of each type while playing one level
For constructing a building and completely upgrading it
For saving over 10,000 coins while playing one level
For filling the storage 30 times
For losing a product with a cat on the field and space available in the storehouse.
For sending 50 moles underground
For catching 50 products in the air
For selling 15 bears
For selling a full truckload of goods
For demolishing one building and constructing another one in its place
For completing the tutorial with a gold ranking
For earning 500 coins using the combo multiplier while playing one level
For selling every animal to complete a level
For having no coins left at the end of the level.
For purchasing five dogs while playing one level
For purchasing three dogs and three cats
For purchasing five animals of each type while playing one level
For completing every level without losing a single product
For completely upgrading every building and vehicle while playing one level
For collecting every collection once
For completing a level without touching a single product
For losing 30 goods on each level due to the storage being full
For sending only fully loaded trucks to town while playing one level
For completing a level with an empty storage
For completing one level more than five times.
For discovering all items which you can click on the level.