Here is the full list of all 14 Ale & Tale Tavern Demo achievements.
Tutorial is complete
Scarecrow quest is complete
Demo is complete
Turn on the light in the Tavern
A zombie wave has been repelled
Drink alcohol
A decorative element is placed
A drunken customer was chased away
Killed 25 boars
Washed 50 dishes
Broke 50 loot crates
The first dish is cooked
50 dishes cooked
100 dishes cooked