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