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.
Act like a good parent
You didn't use your scissors today. It was boring, wasn't it?
Produce sausages 20 times
Produce steaks 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
Who is the real devil in the end?
Buy a new outfit (it's not for Vicky this time)
Get all the upgrades. Mr. T would be proud
Make a new dress for Yvonne
Play with the sign 10 times
Buy a warm couch for your cat
Learn all your grandma's recipes
Find out where Elisewin is gone
Buy all tables. Now you're not just doing takeaway, you have a real restaurant!
Help Gilbert
Anyone else?: Use your scissors 50 times on your clients
So, you got into gardening
Open the shop with the displays and the mannequins full
Hire an attendant
Take Elliot's measurements
Produce minced meat 20 times
Receive the first letter