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