Lies of P

For this ending ...
tell lies most of the game ... When you find Sophia, choose to kill her (Grant Peace).. At the end of the game, Refuses to give your heart .. kill the last boss and get ''Rise of P''

Sorry for the English, I used Google Translate

I'm making this to add more clarity from the previous solution. So to get this ending you need to get enough humanity throughout the game by basically telling lies as much as possible and you can also listen to the records you get throughout the game.

The cut off point to get this ending is at Sophia on Ascension bridge, once you go through the door to sophia you HAVE to choose give her peace and then your hair should change to white if you have enough humanity to get the ending.

You then need to refuse to give Gepetto your heart after speaking to him and kill the nameless puppet to get the achievement.

About knowing if you have enough humanity, there are 4 levels to your humanity level each with a different message:

Level 1: Your Springs are Reacting
Level 2: The Ergo is Whispering
Level 3: You Feel Warmth
Level 4: Your Heart is Pounding

Level 4 is what you want so if you see the heart is pounding message after a lie or listening to a record then you are on track to get it and should be fine to give peace to Sophia at that point.

A list of all lie locations can be found here also - https://liesofp.wiki.fextralife.com/Endings

Hope this helps, I had to try this twice as I wasn't aware of the humanity levels

To get 'Rise of P' ending you need to play a Lie Playthrough where you mostly Lie at every occasion and gain enough humanity.

1. Give Sophia Peace.
2. Refuse to Give Heart to Geppetto.


MULTIPLE ENDINGS IN 1 PLAYTHROUGH:
If you want multiple endings in 1 playthrough you’ll need to use the ‘delete local savegame method’ which I will describe step by step:


1. Defeat Simon Manus and go to the Stargazer at Geppetto.

2. Dashboard and Close the game to make sure a could save is made at that stargazer.

3. Boot up Lies of P again, when you’re ingame at the stargazer again, press your Xbox button and go to Profile —> Settings —> Network Settings —> Go Offline

4. Walk up to Geppetto and Refuse to give him the heart and defeat the Nameless Puppet.

5. Watch ending cutscene and press B when prompted to go into New Game+. Achievement should pop here.

6. You’ll be at Hotel Krat again. Go upstairs to Geppetto’s desk and pick up the letter for Story of Gepetto achievement. (You can also play the piano and/or turn in Nameless Puppet ergo for a boss weapon, to gain other achievements).

7. IMPORTANT: Press your Xbox button but DON’T go to dashboard. In stead hover on Lies of P in the menu, press Start and go to addons. Go to Savegames and press Delete All.
This will kick you out of the game to the Dashboard. Go Online again thru Settings and boot up Lies of P again. It will download the latest Cloud Save. You will now be at the Stargazer right in front of Geppetto again.

To get 'Rise of P' ending you need to play a Lie Playthrough where you mostly Lie at every occasion and gain enough humanity.

1. Give Sophia Peace.
2. Refuse to Give Heart.
after the cutscene the achievement will pop.

100% Complete Walkthrough guide for all achievement/collectibles and Full Game:

If you also missed the letters on Geppetto's table with the previous ending, there's a way to get all 3 endings in one NG (or in your NG+, which I found to be way more fun than the NG itself):

Spoilers below, and I suggest exploring NG yourself, while doing a cleanup on NG+, the second playthrough took me way less time.

During the playthrough, keep collecting humanity as you would for the Rise of P (Good) ending.

After you killed Laxa, stock up, then follow steps below to GO OFFLINE. Enter Sophia's room, let her live (non-release), kill Manus & kill Nameless Puppet (refuse heart) for the middle ending.
This might sound like a lot to do all offline, but you can run past all enemies besides 2 gunmen on the rafters. You can reach Manus in around 8 minutes, hitting all stargazers on the way.

This will get you

Do the steps below to GO ONLINE to claim the achievement.

Now we do the same, but release Sophia, kill Manus, take the elevator down and follow the steps to GO OFFLINE, finish the game with giving heart to get


Then don't forget the check Geppetto's table in hotel for

Do the GO ONLINE steps again to claim the achievements above

Now you can stay online for the 3rd ending, refuse heart and beat NP, you'll get


Then check the Table for Sophia's letter to claim



As for the steps on going on/offline, what worked for me:
GO OFFLINE:
- quit game with the pre-set save spot, wait a bit to make sure it syncs to cloud (before Sophia gate or before Geppetto can save some time, I was in Hotel)
- launch game again and hit Continue
- go offline (I unplugged ethernet), but as others have said dashboard option lets you do this too

GO ONLINE:
- after achievement is expected to pop, use a stargazer and back out to make sure to save progress, then exit to ingame title screen (this all could be unnecessary, but you might not want to repeat NP fight on such technicalities)
- hit , then button on game, manage, delete YOUR save only, doesn't have to be ALL DATA
- hit to Home, plug Ethernet back (go Online)
- wait on dashboard a few seconds for achievements to pop, dont' start the game yet (I think this may be important step)

On my first try I might have quit the game manually before deleting the save, which MitchOss's guide warns against, that could have caused issues.
2nd time, I deleted ALL DATA and launched the game immediately after cause my achievements not to pop.
3rd time the above steps worked.

If you also missed the letters on Geppetto's table with the previous ending, there's a way to get all 3 endings in one NG (or in your NG+, which I found to be way more fun than the NG itself):

Spoilers below, and I suggest exploring NG yourself, while doing a cleanup on NG+, the second playthrough took me way less time.

During the playthrough, keep collecting humanity as you would for the Rise of P (Good) ending.

After you killed Laxa, stock up, then follow steps below to GO OFFLINE. Enter Sophia's room, let her live (non-release), kill Manus & kill Nameless Puppet (refuse heart) for the middle ending.
This might sound like a lot to do all offline, but you can run past all enemies besides 2 gunmen on the rafters. You can reach Manus in around 8 minutes, hitting all stargazers on the way.

This will get you

Do the steps below to GO ONLINE to claim the achievement.

Now we do the same, but release Sophia, kill Manus, take the elevator down and follow the steps to GO OFFLINE, finish the game with giving heart to get


Then don't forget the check Geppetto's table in hotel for

Do the GO ONLINE steps again to claim the achievements above

Now you can stay online for the 3rd ending, refuse heart and beat NP, you'll get


Then check the Table for Sophia's letter to claim



As for the steps on going on/offline, what worked for me:
GO OFFLINE:
- quit game with the pre-set save spot, wait a bit to make sure it syncs to cloud (before Sophia gate or before Geppetto can save some time, I was in Hotel)
- launch game again and hit Continue
- go offline (I unplugged ethernet), but as others have said dashboard option lets you do this too

GO ONLINE:
- after achievement is expected to pop, use a stargazer and back out to make sure to save progress, then exit to ingame title screen (this all could be unnecessary, but you might not want to repeat NP fight on such technicalities)
- hit , then button on game, manage, delete YOUR save only, doesn't have to be ALL DATA
- hit to Home, plug Ethernet back (go Online)
- wait on dashboard a few seconds for achievements to pop, dont' start the game yet (I think this may be important step)

On my first try I might have quit the game manually before deleting the save, which MitchOss's guide warns against, that could have caused issues.
2nd time, I deleted ALL DATA and launched the game immediately after cause my achievements not to pop.
3rd time the above steps worked.

To get 'Rise of P' ending you need to play a Lie Playthrough where you mostly Lie at every occasion and gain enough humanity.

1. Give Sophia Peace.
2. Refuse to Give Heart.
after the cutscene the achievement will pop.

100% Complete Walkthrough guide for all achievement/collectibles and Full Game: