The Witch Hunt Add-on for Dragon Age: Origins has 4 trophies - 4 bronze.
Completed "Witch Hunt" ("Witch Hunt" downloadable content)
Defeated the varterral on Hard or Nightmare difficulty ("Witch Hunt" downloadable content)
Completed the scrying ritual ("Witch Hunt" downloadable content)
Gathered the lost lore of Cadash Thaig ("Witch Hunt" downloadable content)