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.
Complete the Game
Complete 30 Restaurants
Earn 1000000 Cash
Earn 750000 Cash
Use your Cleaver 50 times
Use your Grinder 50 times
Use your Spoon 50 times
Complete 20 Restaurants
Earn 500000 Cash
Achieve 100 Perfects
Earn 250000 Cash
Complete 10 Restaurants
Achieve 50 Perfects
Complete 5 Restaurants
Achieve 25 Perfects
Get a Combo of 20 Cards
Get a Combo of 15 Cards
Get a Combo of 10 Cards
Achieve 10 Perfects
Get a Combo of 5 Cards