This guide will show you how to unlock every Steam achievement for Slay the Princess, including the ones added in the Pristine Cut. This includes spoilers for the whole game, so read with caution. If, while using this guide, you are unsure of how to get to a specific chapter, or how to have a specific voice for any of the chapters, you should check out my Chapter/Vessel Guide, which is linked right here: Chapter/Vessel Guide

This achievement is given by fully completing the in-game gallery, which is unlocked after completing any ending. I’m not going to explain how to get every image here, because I am planning to make a guide later on which will detail exactly how to unlock every gallery image. Once I finish it, I will link it either in this section, or in the comments.

“Our Song”: This achievement will be unlocked when you complete any ending, besides the Good Ending.

“The Good Ending”: In Chapter 1, take the knife and slay the princess without any hesitation, then believe that she is dead. Head upstairs, and when the Narrator gives you your gift, accept it and don’t listen to the Hero.

“There are no endings”: When you meet the Shifting Mound in her full form, don’t argue with her and just choose to leave with her immediately.

“Through Conflict”: Fight back against the Shifting Mound when you meet her, but ultimately give in and leave with her.

“And? What happens next?”: Fight back against the Shifting Mound, going through all of your vessels before reuniting with the Voice of the Hero. Let him take you to the cabin, then head to the basement without the knife. Talk to the princess for a bit and then offer to leave together with her.

“You’re on a path in the woods…”: Fight back against the Shifting Mound until you reunite with the Voice of the Hero. Let him take you to the cabin, then enter the basement with the knife. Talk to the princess for a bit and then accept the deal she proposes, and hand over the knife to her.

“A New and Unending Dawn”: Fight back against the Shifting Mound until you reunite with the Voice of the Hero. Let him take you to the cabin, then enter the basement with the knife. Choose the option to slay her. Leave the cabin, and witness your new world with all of your friends.

“A New and Unending Dawn, and Everyone Hates You”: Throughout the game, every time you approach the mirror in the Long Quiet (except for the first time, since you won't have the option), tell the voices that “it is the end for you, but not for me”. Once you get to the end of the game, follow the same steps as you would for “A New and Unending Dawn”, and you will get this achievement.

“Strange Beginnings”: For this achievement, you need to get the Stranger as your first vessel. If you don’t know how to get her, you can look at my guide to unlock each chapter and vessel. Once you get to the end, fight back against the Shifting Mound until the Hero reappears. Let him take you into the cabin, and from here, you can get whatever other ending you want.

Oblivion: All of the achievements titled after the stages of grief (“Denial”, “Anger”, “Bargaining”, “Depression”, “Acceptance”), and “Just as once you were nothing…” are unlocked progressively by completing the Oblivion ending. To get this ending, you need to play through Chapter 1 like normal, taking whichever route you prefer. Once you get to Chapter 2, however, you need to turn around and run away from the cabin. After you do this, you will get sent back to Chapter 1, and you need to do this again, doing it 5 times in total. You will get a new achievement for each time you do it, and then a final achievement once you finish.

“Your New World”: This is probably the most involved ending to unlock. To get it, you need to play through the game, getting any 5 of the following princesses as your vessels:

-The Stranger
-Mutually Assured Destruction (Razor Chapter IV)
-The Empty Cup (Razor Chapter IV)
-Deconstructed Damsel
-The Apotheosis (By defying her and throwing your knife at her eye)
-The Apotheosis (By trying to help her but then giving into the pain and wrapping around her)
-The Wraith (By jumping into the void)
-The Wounded Wild (By stabbing her)
-The Eye of the Needle (By attacking her once she’s outside)
-The Den (By fighting her)
-Drowned Grey
-The Cage (By breaking the chains)
-The Princess and the Dragon (By leaving her in the cabin once you are back in your body) (Thank you to Wintermute for the correction)
(This is not a complete list, but it should be enough to give you some options on how you want to get the ending.)

After the fifth princess is taken into the Long Quiet, you will enter the confrontation with the Shifting Mound, and you need to defy her. Each time she shows you a vessel, make sure you choose the dialogue option that is outlined in red. After she gives up, choose to destroy her, and the most secret ending of Slay the Princess will be yours!

These achievements are all unlocked by bringing different vessels to Her. I’m not going to put them all here, but I have a different guide posted that includes how to unlock each vessel, linked in the intro.

“The Real Slay the Princess Starts Here” “The Body” “The Bloat” “The Decay” “The Remains” “The Long Quiet”- These 6 achievements are all unlocked through normal progression of the game, no matter what chapters you go through. You get each of them at a different point of the game, all by looking in the mirror in the Long Quiet after She takes a vessel.

“Death of the Author” is unlocked by exhausting all the options while talking to the Narrator, with all the pieces of the mirror eventually breaking.

“I Don’t Need Answers” is unlocked by immediately smashing the Narrator’s mirror when you finally meet him.

“I Never Left Your Side” is unlocked by bringing any vessel to Her, and then attempting to wait forever while talking to the Mound in the Long Quiet. (I actually really love this achievement and I think it is incredibly clever on the part of the developers, so I recommend you experience it for yourself)

“Past the Point of No Return” is unlocked by bringing at least one vessel to the Shifting Mound, then coming back to Chapter I, and attempting to get the Good Ending. Once you go through all the steps and tell the Voice of the Hero that you are, indeed, happy, the Good Ending screen will come up for a few seconds before benign interrupted by the voice of the Shifting Mound, and you will get the achievement.

“I Didn’t Hear No Bell”- Go down to the basement without taking the knife. Choose the option to step forward and fight the Adversary. Continue choosing the option to stand back up and fight her, over and over until the chapter ends.

“That Which Cannot Die Cannot Die…”- Go down to the basement with the knife. Attack the princess, then keep pushing your blade into her arm. When she tosses your knife back to you, attack her again. Once you black out, get back up, then choose the explore option that says “Close to untethering?” Finally, choose any dialogue option on the next screen.

“Strike Me Down…”- Head into the basement, either with or without the knife. Once facing the princess, choose the explore option that says, “I haven’t decided what I’m doing yet.”, then choose to step closer. Tell her you won’t fight her, and continue choosing not to until the chapter ends.

“That Shouldn’t Have Worked”- Take the knife and head into the basement. Attack the princess, then keep pushing your blade into her arm. When she tosses your knife back to you, choose the explore option that ends with “That doesn’t mean we’re immortal.” She will give you a free hit on her, and you need to take it, which will give you the achievement.

“Your Obedient Servant”- Enter the basement, with or without the knife. Do what the Tower tells you to do, then choose the option to pledge yourself to her. Finally, break her chains.

“Godkiller”- Enter the basement with the knife. After dropping the knife and kneeling, choose the dialogue option that begins with “I’m not going to help you end the world.” Pick up the blade, stand up, “end this”, then continue choosing to slay the princess until you actually slay her.

“Hitchhiker”- Enter the basement with/without the knife. Talk to the Spectre and ask her what it is she wants from you, then agree to let her possess you. Walk out of the cabin together.

“The Exorcist”- Enter the basement with the knife. Talk to the Spectre and ask her what it is she wants from you, then agree to let her possess you. Stab yourself with the knife, killing both you and her.

“Heart-ripper”- Enter the basement with/without the knife. Once face-to-face with the Spectre, tell her you are going to leave her in the basement. You will get the achievement once she rips your heart out.

“A Monolith of Fear”- Enter the basement with the knife. Once talking to the Nightmare, throw your blade into the abyss. She will then remove her mask, and you get the achievement once the rest of the events play out.

“House of… No… Leave”- Enter the basement with the knife. Slay the Nightmare. You get the achievement after the characters realize you are now trapped in the basement.

“A World of Terror”- Enter the basement with/without the knife. Talk to the Nightmare and agree to let her out of the cabin. Walk out of the cabin together.

“Terminal Velocity”- Enter the basement with the knife. Talk to the Nightmare and agree to let her out of the cabin. Once on the stairs, slay the Nightmare and get pushed into the abyss.

“Be formless, shapeless”- Enter the basement without the knife. Choose any non-explore option to go to the next chapter. Approach the mirror and wipe it clean. Choose any option here, then choose another one. Go through the dialogue until you’re facing her Full Razor form. Empty your mind and face the Razor.

“Water and Steel”- Enter the basement with the knife. Choose any non-explore option to go to the next chapter. Approach the mirror and wipe it clean. Choose any option here, then choose another one. Go through the dialogue until you’re facing her Full Razor form. Empty your mind and fight the Razor.

“Opossum”- Enter the basement. Move, then choose two explore options. Play dead.

“Freeze”- Enter the basement, and stand still at the first opportunity to.

“Ahab”- Enter the basement with the knife. Stand still to get swallowed. Keep choosing the explore option to slash at her stomach until you can stab at her heart.

“Dissolving Will”- Enter the basement. Stand still to get swallowed. Continue choosing the explore options to advance the time until you dissolve in her stomach acid.

“Knives Out and Masks Off”- Enter the basement with the knife. Choose to slay the Witch when you first see her.

“Playing it Safe”- Enter the basement. Choose to turn around and leave the Witch in the basement when you first see her.

“The Frog”- Enter the basement. Choose the explore option that ends with “We should team up.”, then the one that starts with “Why do I have a nagging feeling…”, and then the one that says “I guess I’ll cut you out of here.” Leave with the princess, and go up the stairs ahead of her.

“The Scorpion”- Enter the basement with the knife. Choose the explore option that ends with “We should team up.”, then the one that starts with “Why do I have a nagging feeling…”, and then the one that says “I guess I’ll cut you out of here.” Leave with the princess, and make her go up the stairs ahead of you. Stab her in the back with the knife.

“Past Life Gambit”- Enter the basement with the knife. Choose to give it to the Witch when you first see her.

“Coldly Rational”- Enter the basement. Slay the Prisoner, and persist until you stab her in the heart.

“Restless Thoughts”- Enter the basement. Slay the Prisoner, and persist until you stab her in the heart. Leave the cabin, re-enter, then proclaim that you are happy with your gift. The Good Ending screen will pop up for a bit before it is interrupted by the Skeptic, and you get the achievement.

“Talking Heads”- Enter the basement. Sit down near the Prisoner, then give her your knife. Once she cuts her head off, pick the head up and take it out of the cabin with you.

“Prison of the Mind”- Enter the basement. Sit down near the Prisoner, then ask her about the empty shackle. Inspect the shackle yourself, and you will be locked in it, giving you the achievement.

“Romantic Haze”- Enter the basement. Free the Damsel from her chains, then leave the basement with her.

“Ladykiller”- Enter the basement with the knife. Slay the Damsel.

“And They Lived Happily Ever After”- Enter the basement. Free the Damsel from her chains, then ask her what she wants to do. Keep asking her similar questions with the explore options, as she becomes lower and lower quality, until she is taken by the Shifting Mound.

“The Illusion of Choice”- Complete the Stranger’s chapter. (There aren’t really any specific options or branching paths to take in this chapter, hence the achievement’s title, so it should be pretty straightforward.)

“A Wide Open Field”- With the Voice of the Hunted, enter the basement with the knife. Step out into the basement, then turn back and run away, until you get back out in front of the cabin. Begin attacking the Eye here, until she falls down from her injuries.

“The Blind Leading the Blind”- Enter the basement. Step out into the basement, then turn back and run away, until you get back out in front of the cabin. Point out to the Eye that she is now free of the cabin, and she will give up fighting.

(Thank you to @flarespeed for the corrections)

“Quantum Beak”- With the voices of the Broken and the Stubborn (you must have had the Tower as your Chapter II princess to get this achievement), enter the basement. Choose either non-explore option. Once she has finished ripping you apart, and you are back standing face-to-face with her, she will intertwine the two of you, and you get the achievement.

“A new leaf in a weathered book”- With the voices of the Stubborn and the Broken or the Stubborn and the Cold (you must have had the Adversary as your Chapter II princess), enter the basement. Either fight back or let her end you. After she has finished ripping you apart and you two are back in the room together, tell her that you are “still her”, and ask her to leave with you.

“A hint of feeling”- Enter the basement with the knife. Attempt to fight the Fury. After she has finished ripping you apart and you two are back in the room together, slay her.

“Going the distance”- With the voices of the Stubborn and the Contrarian, enter the basement without the knife. Select the “Round 3” option. Continue walking towards the Fury step by step until you can finally slay her.

(Thank you to @ttv.ewanconan for the corrections)

“The End of Something”- This achievement is unlocked no matter what, as soon as you see the Apotheosis burst out of the ground.

“Something to remember you by”- Approach the cabin, then take the knife out of the tree. Charge at the Apotheosis, and once you get the chance, throw your knife into her eye.

“A Window to the Unknown”- Approach the cabin, then choose to embrace your new goddess. Once you two are in the Long Quiet together, and she starts pulling at the walls, you need to not endure the pain, and instead attack her, and make her "feel what you feel". You should get the achievement once you approach the mirror.

“Grace”- Approach the cabin, and either take the knife and charge at her or attempt to flee. Once she picks you up, choose to embrace your new goddess. Once she begins pulling at the walls of the Long Quiet, endure the pain until she is done.

“Courage and Madness” + “A Goddess Unraveled”- With the Voice of the Paranoid, approach the cabin then take the knife. Charge at the Apotheosis and attack her. Once she knocks you to the ground, get back up and attack her again, then push against her barrier. Once the two of you enter the Long Quiet, and she begins pulling at the walls, attack her and make her feel what you feel.

(Thank you to @ttv,ewanconan for the corrections)

“You don’t have to keep picking the same option”- Choose the explore option that begins with “What are we supposed to do?”, and then continue choosing “There has to be something for us to do other than wait.” until she stops responding to you.

“What Once Was One, Then Was Two”- Choose the explore option to wait, then talk to the Princess about the title card. Once you go through the dialogue and are back in your own body, give the knife to the Princess so she can cut herself out. Leave the cabin together and lay down outside with her.

“The Princess and the Dragon”- Choose the explore option to wait, then talk to the Princess about the title card. Once you go through the dialogue and are back in your own body, either slay the Princess or try to cut her out of her chains instead of handing over the knife.

"An Opportunist at Heart"- Choose the explore option to wait, then talk to the Princess about the title card. Once you go through the dialogue and are back in your own body, just take the knife and leave her in the cabin.

“Wait wait wait wait wait!”- In Chapter II, you need to attack the Spectre when you first see her. In Chapter III, choose the explore option to wait, then talk to the Princess about the title card. Go through the dialogue, and once you are back in your own body, she will cut herself free and attack you, which will give you the achievement.

“The Passenger”- Enter the cabin. Once attacked and possessed by the Wraith, walk out of the cabin with her and free her.

“The Exorcist III”- Enter the cabin. Once attacked and possessed by the Wraith, turn around and jump into the abyss with her.

“Flight” + “The Lion and the Mouse”- With the Voice of the Skeptic, enter the basement. Step out into the basement, with the intent to run around and lure her out. Once she gets trapped in the tunnel, step closer to her and offer her your hand. Try to pull her out, then start digging through the tunnel once it begins to collapse.

“Hunger Pangs”- With the Voice of the Skeptic, enter the basement. Step out into the basement, with the intent to turn around and lure her out. Once she gets trapped in the tunnel, turn and try to leave.

“Coup de grâce”- With the Voice of the Skeptic, enter the basement with the knife. Step out into the basement, with the intent to turn around and lure her out. Once she gets trapped in the tunnel, slay her.

“Fight” + “Heroic Strike”- With the Voice of the Stubborn, enter the basement with the knife. Step out into the basement, ready to fight the Den. Once given the choice, choose to strike at her heart, rather than give into instinct.

“She eats he eats she eats he eats…”- With the Voice of the Stubborn, enter the basement with the knife. Step out into the basement, ready to fight the Den. Once given the choice, choose to follow your instincts, rather than strike at her directly.

“The Wound”- Listen to what the narrator says, and remember what you once were, until you come face-to-face with the Wounded Wild.

“A Glimpse of Something Bigger”- Listen to what the Wild says, and become one with her, searching the Long Quiet until you find a glimpse of the world outside.

“Abandonment”- Enter the basement, then turn around and leave.

“Trust Issues”- Enter the basement. Talk to the Thorn until she trusts you enough to take the blade, then stab her.

“True Love’s Kiss” + “Turning Over a New Leaf”- With the Voice of the Smitten, enter the basement. Talk to the Thorn until she trusts you enough to take the blade, then cut her free. Kiss her, then leave together.

(Thank you to @Rat Bastard for the corrections)

“No Exit”- Enter the cabin. Once you have fallen into the chains, continue choosing explore options to advance time until your head pops off.

“The Riddle of Steel”- With the Voice of the Paranoid, enter the cabin, then say something to the Cage when you first see her. After that, start attacking your chains to try and get free. Keep doing this until you get out, then give her your implement.

“Allegory of the Cage” or "Free Will"- With the Voice of the Cheated, at the beginning of the chapter, choose the explore option that comments on the fact that you already have the knife, then throw the knife into the woods. Continue into the cabin. Choose explore options to advance time until you can point out to the Cage that you are unarmed. Take her head, then climb up to the top of the cabin. For "Allegory of the Cage", leave with the Cage's head. For "Free Will", drop her head back into the cabin.

“Burning Down the House”- Complete the Burned (Damsel) Grey’s chapter.

“And All This Longing…”- Complete the Drowned (Prisoner) Grey’s chapter.

“I Meant It.”- Enter the upstairs room and sit at the table. Ask about dinner, then eat it. Ask what to do next, then play the game with her. Ask her what to do next so that the third torch goes out, then ask her what she thinks will happen. Once the final torch goes out, stand up and walk over to her, take her hand, and leave together.

“It’s Finally Over.”- Enter the upstairs room and sit at the table. Ask about dinner, then eat it. Ask what to do next, then play the game with her. Ask her what to do next so that the third torch goes out, then ask her what she thinks will happen. Once the final torch goes out, stand up and walk over to her, take the knife, and stab her.

“We Don’t Have to Let It Go Out.”- Enter the upstairs room and sit at the table. Ask about dinner, then eat it. Ask what to do next, then play the game with her. Ask her what to do next so that the third torch goes out, then tell her that you don’t have to let the final torch go out.

“Game Night”- With the Voice of the Opportunist, enter the upstairs room and sit at the table. Ask the Princess about dinner, then eat it. Ask her what you two are going to do next to start playing the board game. You will get the achievement after playing the game, as long as you have the Opportunist.

“Shadows on the Walls”- With the Voice of the Skeptic, enter the upstairs room and sit at the table. Try to get up from your seat, then tell the Princess that something is keeping you sitting down. Ask her who “he” is, and then the Skeptic will realize and tell you who it truly is.

Hello! In case anyone is actually reading this, I wanted to just leave a few notes on my process for creating this guide. I wanted to create this guide completely on my own, without relying on looking at any other guides for help while making it. I did this mostly successfully, as I did have to go to the Black Tabby Discord server a few times for help with some of the harder to get achievements, including the "Your New World" ending. I still feel very accomplished, though, because I was able to create this just based on playing through the game myself and what I could figure out based on the achievements' names and descriptions. Unfortunately, I was unable to test this whole guide out in game, since I already have every achievement, so some parts of the guide may be incorrect. If you are using this guide and are unable to get a specific achievement using the instructions, don't hesitate to let me know in the comments, and I will try my best to fix it. Thank you so much for using my guide!