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