Here is the full list of all 20 Woolfe - The Red Hood Diaries achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Defeat Woolfe on hard.
Finish the harbour on hard.
Be quicker than the dev's and finish A Forest Adrift in less then 4 minutes and 56 seconds
Kill 50 rats.
Kill 100 kickstarter backers.
Unlock 36 diary entries
Kill 20 Fairies.
Chase Woolfe through the woods without dying.
Escape the guards without dying.
Drown right after Red tells you she can't swim.
Defeat Woolfe and listen to what Grandma has to say.
Discover all combo's
Visit the outhouse in the Forest Adrift
Defeat the Pied Piper
Unlock 18 diary entries.
Kill a Tesla guard
Defeat the big rat.
Find Reds axe
Roll...
Unlock 6 diary entries.