Q:

What's the difference between the "Long Live the Queen" and "Royalist Ally" trophies?

I just completed the quest in Glitterdelve Mine quests and simultaneously got two trophies, but they seem to mean the exact thing:

Long Live the Queen - You broke the siege at Glitterdelve and saved Queen Roslyn.
Royalist Ally - You have shown unwavering support to the Crown.

It seems odd to have two trophies for the same thing. Are there differences?

A:

Long Live the Queen is unmissable and is awarded for completing the quest, but Royalist Ally is awarded for choosing the correct dialogue options when completing it:

 Choose dialogue options favorable to the Crown, and when asked, tell the Queen you'll try to spare Jeyne's life.

