To unlock the "STAND YOUR GROUND" trophy in Detroit: Become Human, you must choose the "Stand Your Ground" and "Sacrifice" options during the chapter "FREEDOM MARCH".Contrary to the other solution, you do not necessarily have to have taken the maintenance droid with you during "SPARE PARTS". There is one other option but it depends on your actions during The Stratford Tower. This alternative method will however void your ability to get another trophy if you haven't got it already:
Here are your options:
The only situation in which you will not unlock this trophy despite choosing to stand your ground is if
As long as you fulfil the requirements this trophy will unlock when you reach the flowchart at the end of the chapter.