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