The Trespasser Add-on for Dragon Age: Inquisition has 11 achievements worth 240 gamerscore.
Travel Light on for "In Hushed Whispers": finish the quest.
Fair-Weather Friends always on: enter Halamshiral with all followers.
Take It Slow on: reach Skyhold at level 5 or less.
Rub Some Dirt on It on: slay the Hivernal high dragon.
Rest Easy trial always on in Emprise du Lion: claim Suledin Keep.
Even Ground on: slay a level 16 or higher Fereldan Frostback.
Progress the story to unlock.
Unlock all caches watched over by ancient statues.
Find all of the wearable items that make up the Taken Shape.
Defeat 20 foes promoted by Walk Softly.
Slay 10 great bears promoted by Grizzly End.