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