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