Here is the full list of all 31 The Forest of Doom achievements.
Find all the artwork in The Forest of Doom
Release an Earth Elemental on to the world
Find the ultimate ending in Hardcore mode
Find all the painted canvas pieces to unlock alternative cover
Fight a feline foe
Find the ultimate ending in Medium mode
Use an aromatic bulb to ward off a night terror
Bounce your way out of trouble
Reveal the truth about an individual
Suffer at the hands of lycanthropy
Help two souls out but be duped each time
Successfully use the Net of Entanglement
Get caught in an Ogre's tree trap
Be fired upon by arrows in four different encounters
Wield a carrot as a deadly weapon
Kill a creature who hates 'bwight light'
Face a barrage of eggshell splinters
Eat a strange fruit
Fight a creature that has been darted
Buy all of Yaztromo's items
Be unlucky in a 'Test your Luck' roll
Find your new destiny
Find the two halves of the dwarfish hammer
Win an arm-wrestling contest
Ride a strange looking horse
Tame a flying beast with music
Return a brass bell to its owner
Find the ultimate ending in Free Read mode
Fight the iconic Shapechanger!
Escape Darkwood Forest!
Be lucky in a 'Test your Luck' roll