Complete the indicated task to unlock the achievement.

Achievement	How to unlock
A Method To His Madness	Complete Chapter Three.
At Wits' End	Complete Chapter Seven.
Back In The Saddle	Help quench the horse's thirst.
Big Breakthrough	Find out how the intruder got into the warehouse.
Bookworm	Identify all the unknown substances.
Brain Food	Feed yourself to a gator.
Curiosity Killed The Cat	Rouse evil from its slumber.
Fhtagn!	Stop the ritual.
Fond Memories	Find the book about tulpas.
Gaze Into The Abyss	Make it look back at you.
Going Once...	Find out more about the auction.
High Profile	Learn about the missing Nepali brother.
History Check	Learn more about Gygax.
Knives Out	Complete Chapter Five.
Land, Ho!	Reach the island.
Let Me Be Frank	Pretend to be Barnaby.
Lock, Stock, And Barrel	Pick every lock.
No Man Is An Island	Complete Chapter Six.
No Stone Unturned	Find all evidence at the cliffside crime scene.
Open Sesame	Unlock the safe.
Read Between The Lines	Help Barnes with his love life.
Read It And Weep	Leave Barnes the book.
Reawakened	Collect all achievements.
Sticky Fingers	Find the raccoon nest.
The New World	Complete Chapter Four.
To Hell In A Handcart	Complete Chapter One.
Up In Flames	Learn about the lighthouse keeper.
Whispers In The Dark	Complete Chapter Two.