This is an easy trophy to miss, but I unlocked it quite easily. There are two key elements here...
First of all, play a Pacifist runthrough with Markus. Public Opinion will flash blue in the top right corner during key decisions, so monitor your progress with this. It can also be checked in your Flow Chart. Your aim is to have the public SUPPORTIVE by the end of this guide. At any point, feel free to get Kara and Alice killed to speed things up considerably, unless you still need trophies linked to them.
And second, Connor needs to remain a machine, NOT DEVIANT. Make decisions that do not involve emotion. The best way to do this is by following the guide for the
I'll Be Back achievement.
This will put Connor on the rooftop before the final battle. If Connor DIES on the roof, he'll appear in the crowd during Markus' victory speech (which is why the Pacifist run is so important). You then have the option to SHOOT or DON'T SHOOT. Choose DON'T SHOOT and you will be taken to the snowy Zen Garden and a confrontation with Amanda. Then, all you have to do is navigate the snow and reach the Blue Handstone to unlock this trophy (use R2 to find it).
A Pacifist Runthrough with Markus goes like this:
- Don't fight back against anyone, especially Leo when he is robbing Carl's studio in
Broken.
- During
Spare Parts, make sure to take John (the security android who discovers you stealing parts) with you. This is key for
Freedom March.
- During
The Stratford Tower, do NOT shoot the runaway employee. Then, during your speech, make calm and peaceful decisions. Finally, drag Simon to the roof and leave him alive.
- Perform a peaceful riot during
Capitol Park. Don't damage anything when prompted to change the location, or become violent. Graffiti and move things, never break. Put flags up when possible. Don't shoot the kneeling policemen at the end of this level. Again, there is an onscreen indicator for this - keep the peaceful above 50%.
- Perform a peaceful demonstration during
Freedom March. Sacrifice yourself when given the chance. If you followed the above, John will save you so Markus can escape. Markus WILL get shot here, so don't panic.
- When asked by your people, choose to open Dialogue during
Crossroads.
- And finally, during
Night of the Soul, choose to Demonstrate Peacefully.
During
Battle for Detroit (the final level), you will be asked to walk towards your apparent doom. Some of your people will fall to gunfire but hold steady. Again, choose calm and peaceful options, and when prompted either Raise Your Hands or Sit. This will make the androids hold out.
You will then set up a barricade. Do as instructed on your mission prompts, and choose FREE when asked to place a banner for the press/camera crews. When the FBI approaches, DO NOT negotiate. This will lead to the final battle. Hit the QTE's and save whomever. Following this scene, you will be stood next to a wrecked bus with the remaining survivors. Either choose to Kiss North (if she is your lover at this point) or Sing. This should complete the game with a peaceful outcome. Cue the victory speech, where you can ask Connor to NOT SHOOT and there you go. Trophy unlocks after the credits.
If I missed anything, please let me know and I will add it.