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.
Reached Kirkwall with each character class across multiple playthroughs.
Sided with the templars five times.
Completed Dragon Age II twice, or completed it once with a save imported from Dragon Age Origins.
Completed Dragon Age II.
Became the viscount of Kirkwall.
Defeated Meredith, knight-commander of Kirkwall's templars.
Completed a romance with one of your party members.
During each year in Kirkwall, discovered 3 secret messages from the Band of Three.
Found every variety of crafting resources.
Sided with the mages five times.
Crafted all of the items from a single crafting tree.
Completely upgraded the armor of one of your party members.
Found and killed a high dragon.
Found and killed the ancient demon, Hybris.
Found all four chapters of "The History of the Chantry," by Brother Genitivi.
Defeated the Arishok.
Met Grand Cleric Elthina, Viscount Dumar, Knight-Commander Meredith, and First Enchanter Orsino.
Earned the Arishok's respect.
Earned the friendship or rivalry of four party members.
Earned the rivalry of one of your party members.
Found and killed a varterral.
Visited 10 caves in Kirkwall and the surrounding area.
Flirted with one of your party members to begin a romance.
Found and killed the undying Xebenkeck.
Completed a full year in Kirkwall without any party member being knocked unconscious.
Defeated the rock wraith on your expedition into the Deep Roads.
Explored the Deep Roads.
Became a partner in a Deep Roads expedition.
Reached Level 20.
Learned two class specializations.
Mastered a weapon style.
Reached Level 10.
Had 100 or more sovereigns in your purse.
Used teamwork to perform a cross-class combo.
Unlocked 100 codex entries.
Enchanted an item.
Recruited four party members.
Gave a gift to one of your party members.
Earned the friendship of one of your party members.
Kicked the slavers out of your ancestral mansion.
Upgraded the armor of one of your party members.
Opened 50 chests.
Upgraded a spell or talent.
Acquired your first crafting recipe.
Left Kirkwall to explore the outlying regions.
Toggled the map from day to night.
Became a resident of Kirkwall.
Allied yourself with the mercenaries upon arriving in Kirkwall.
Allied yourself with the smugglers upon arriving in Kirkwall.
Listened to Varric begin his tale of the Champion of Kirkwall.
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.