Full list of all 65 Dragon Age II achievements worth 1,370 gamerscore. It takes around 60-80 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 15 achievements worth 370 Gamerscore.
Defeated the rock wraith on your expedition into the Deep Roads.
Defeated the Arishok.
Defeated Meredith, knight-commander of Kirkwall's templars.
Upgrade a spell or talent.
Use teamwork to perform a cross-class combo.
Slay a varterral.
Slay a high dragon.
Deal with an undying terror.
Find and kill an ancient personification of pride.
Master a weapon style.
Complete a full year in Kirkwall without any party member being knocked unconscious.
Acquire your first crafting recipe.
Become a partner in a Deep Roads expedition.
Reach Level 10.
Upgrade the armor of one of your party members.
Enchant an item.
Craft all of the items from a single crafting tree.
Have 100 or more sovereigns in your purse.
Seize the throne.
Learn two class specializations.
Completely upgrade the armor of one of your party members.
Reach Level 20.
Become a resident of Kirkwall.
Explore the Deep Roads.
Discover your family's legacy.
Toggle the map from day to night.
Leave Kirkwall to explore the outlying regions.
Visit 10 caves in Kirkwall and the surrounding area.
Reach Kirkwall with each character class. Multiple playthroughs required.
Unlock 100 codex entries.
Open 50 chests.
Find every variety of crafting resources.
During each year in Kirkwall, discover 3 secret messages from the Band of Three.
Hear the beginnings of your own legend.
Recruit four party members.
Meet the four most powerful people in Kirkwall.
Give a gift to one of your party members.
Flirt with one of your party members to begin a romance.
Earn the friendship of one of your party members.
Earn the rivalry of one of your party members.
Complete a romance with one of your party members.
Find all four chapters of "The History of the Chantry," by Brother Genitivi.
Earn the respect of an important adversary.
Earn the friendship or rivalry of four party members.
Complete Dragon Age II.
Ally with a certain group of mercenaries.
Ally with a certain group of smugglers.
Sided with the mages five times.
Sided with the templars five times.
Complete Dragon Age II twice, or complete it once with a save imported from Dragon Age Origins.
Confront the culprit behind the Vael family's murder.
Meet secretly with the agent of the Divine
Deal with the mercenaries that killed the Vael family.
Earn either a friendship or rivalry with Sebastian.
Give Sebastian a family heirloom.
Defeat an ancient evil in the Vimmark Mountains.
Kill a genlock, genlock alpha, hurlock alpha, bronto, and deepstalker in the Vimmark Mountains.
Apply three effects to Hawke's Key.
Complete the main quest in the Vimmark Mountains with Bethany or Carver in the party.
Complete every side quest in the Vimmark Mountains prison tower.
Meet Tallis in Hightown.
Lure and kill an alpha wyvern near Chateau Haine.
Evade vault security in Chateau Haine.
Disarm the fire traps in Chateau Haine's vaults.
Defeat Duke Prosper, with or without Tallis.