Here is the full list of all 23 Ravenous Devils achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Produce steaks 20 times
You didn't use your scissors today. It was boring, wasn't it?
Produce sausages 20 times
Do you like black humour? No? You'll like it, trust me
Fertilise the unusual plant in the greenhouse and make it sprout up
Act like a good parent
Play with the sign 10 times
Who is the real devil in the end?
Make a new dress for Yvonne
Buy a new outfit (it's not for Vicky this time)
Get all the upgrades. Mr. T would be proud
Learn all your grandma's recipes
Open the shop with the displays and the mannequins full
So, you got into gardening
Find out where Elisewin is gone
Help Gilbert
Buy all tables. Now you're not just doing takeaway, you have a real restaurant!
Anyone else?: Use your scissors 50 times on your clients
Buy a warm couch for your cat
Hire an attendant
Take Elliot's measurements
Produce minced meat 20 times
Receive the first letter