Here is the full list of all 97 Slay the Princess achievements.
Bring the Networked Wild to Her
Take on a spirit and destroy it the only way you can.
Bring the Wraith to Her
When taken against your will, deal with your enemy the only way you can.
Successfully take the fight to a creature in its den
Bring the Apotheosis to Her
Witness your better's ascension
Bring the Razor (Full) to Her
Freeze in front of a creature on your first meeting
Take the bait from your foe
Free someone who doesn't want to be freed
Bring the Razor's heart to Her
Allow a sharp foe to vanquish herself
There's no going back now
Fall for the rest of your life
Stuck in a dream without a stair to be seen
Bring the Deconstructed Damsel to Her
Beget Strange Endings
There are worse fates to suffer than a broken heart
When taken against your will, witness your enemy's freedom
Bring the Beast to Her
Free a creature while under extreme duress
Fool a predator by faking your own death
It was in your nature
Unleash the power of pacifism on your foe
Cannot die cannot die cannot die
Slay the Princess, and make some enemies along the way
Bring the Eye of the Needle to Her
Lure an enemy to advantageous terrain and win
Fight your foe unarmed and go the distance
So have you become nothing once again
This is it
You don't know what you're doing
Whatever it is, you'll face it together.
Strike the heart from the belly of the beast
Bring the Adversary to Her
What can I do to make you stop?
Why have you come back?!
Return to your destined path, or face the consequences
Dispatch a prisoner
Bring the Den to Her
Successfully flee from a creature in its den
Dodge a creature until you can dodge no longer
Bring the Wounded Wild to Her
Embrace your transformation
Some tears can never be mended
Directly attack a suspicious character
Leave a suspicious character in the basement
Share a thorny prison
Bring the Moment of Clarity to Her
See what hides behind her mask
Bring the Prisoner's head to Her
Free a prisoner
Bring the Tower to Her
Pledge your loyalty to your better.
Bring the Spectre to Her
Pick up a passenger and take her to her destination
You did it! You saved everyone!
It's all she wanted
Slay the Princess
And at the end of that path is a cabin
Break the mirror without asking any questions.
Master yourself and vanquish a sharp foe.
Bring the Nightmare to Her
Let your terrors loose upon the world
Bring the Thorn to Her
Kiss her
Work through some issues and learn to trust again.
Abandon her in a thorny prison
Hand your power to a suspicious character.
Bring the Drowned Grey to Her
Drown at the hands of a faded spirit.
Have a voice ruin your happy ending
Bring the Damsel to Her
Your love will set you free
Finish the Game. (The Good Ending doesn't count)
Only new beginnings
We Carve Meaning
Bring the Prisoner to Her
All of this is you
Run out of questions
Become your own jailer
Bring the Witch to Her
Attempt to Out-Wait Your Destiny.
You've unraveled
It was in her nature
Bring the Burned Grey to Her
You've withered
Slay an innocent
Burn at the hands of a faded spirit
Bring the Stranger to Her
You've grown
When everything is possible, nothing is.
You'll know it when you see it.
Bring the Fury to Her
It's you
Slay your better