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.
Kill 50 rats.
Escape the guards without dying.
Visit the outhouse in the Forest Adrift
Drown right after Red tells you she can't swim.
Unlock 36 diary entries
Kill 100 kickstarter backers.
Defeat Woolfe and listen to what Grandma has to say.
Discover all combo's
Kill 20 Fairies.
Defeat the Pied Piper
Unlock 18 diary entries.
Defeat the big rat.
Find Reds axe
Unlock 6 diary entries.
Roll...
Kill a Tesla guard
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.