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