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