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