Here is the full list of all 20 Chef Solitaire USA achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Use your Spoon 50 times
Use your Grinder 50 times
Use your Cleaver 50 times
Complete the Game
Earn 1000000 Cash
Complete 30 Restaurants
Earn 750000 Cash
Get a Combo of 20 Cards
Complete 20 Restaurants
Earn 500000 Cash
Achieve 100 Perfects
Complete 10 Restaurants
Earn 250000 Cash
Achieve 50 Perfects
Complete 5 Restaurants
Achieve 25 Perfects
Get a Combo of 15 Cards
Achieve 10 Perfects
Get a Combo of 10 Cards
Get a Combo of 5 Cards