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