Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Atheist	Finish game not using any silver crucifixes or watcher totems.
Big fire	Destroy the sacrificial tree.
Blind and dead	Kill 5 deadblinds in one playthrough.
Bookworm	Unlock all skills in one playthrough.
Break and enter	Unlock and visit every location behind locked doors.
Chestbuster	Unlock 5 chests in one playthrough.
Clear sky	Kill the night flier.
Explorer	Find all the save stones in the game.
Exterminator	Kill 50 enemies in one playthrough.
First blood	Attack the beast.
Free doggy	Save a dog.
Head hunter	Make 20 headshots in one playthrough.
Help from above	Attack an enemy with lightning using a silver crucifix.
High stakes	Finish game in perma mode.
Just a whisper	Don't get attacked by a whisperer.
Necronomicon	Find the book of the dead.
No more howling	Kill the beast.
Not today	Finish the game without dying.
Say hello to my little friend	Fire a cannon.
The legend is born	Finish the game.
Weird discovery	Find the weird looking skull.
Witch hunter	Kill the witch.