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.
Found every variety of crafting resources.
Crafted all of the items from a single crafting tree.
Became the viscount of Kirkwall.
Sided with the templars five times.
Earned the Arishok's respect.
Reached Kirkwall with each character class across multiple playthroughs.
Allied yourself with the mercenaries upon arriving in Kirkwall.
Completed Dragon Age II twice, or completed it once with a save imported from Dragon Age Origins.
Completed Dragon Age II.
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 and killed the ancient demon, Hybris.
Completely upgraded the armor of one of your party members.
Found and killed a high dragon.
Reached Level 20.
Found all four chapters of "The History of the Chantry," by Brother Genitivi.
Sided with the mages five times.
Defeated the Arishok.
Met Grand Cleric Elthina, Viscount Dumar, Knight-Commander Meredith, and First Enchanter Orsino.
Earned the friendship or rivalry of four party members.
Found and killed a varterral.
Found and killed the undying Xebenkeck.
Visited 10 caves in Kirkwall and the surrounding area.
Earned the rivalry of one of your party members.
Learned two class specializations.
Flirted with one of your party members to begin a romance.
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.
Mastered a weapon style.
Became a partner in a Deep Roads expedition.
Had 100 or more sovereigns in your purse.
Reached Level 10.
Used teamwork to perform a cross-class combo.
Enchanted an item.
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.
Unlocked 100 codex entries.
Opened 50 chests.
Recruited four party members.
Left Kirkwall to explore the outlying regions.
Toggled the map from day to night.
Acquired your first crafting recipe.
Became a resident of Kirkwall.
Upgraded a spell or talent.
Allied yourself with the smugglers upon arriving in Kirkwall.
Listened to Varric begin his tale of the Champion of Kirkwall.
Met secretly with the agent of the Divine
Gave Sebastian a family heirloom.
Confronted the culprit behind the Vael family's murder.
Earned either a friendship or rivalry with Sebastian.
Dealt with the mercenaries that killed the Vael family.
Completed the main quest in the Vimmark Mountains with Bethany or Carver in the party.
Defeated an ancient evil in the Vimmark Mountains.
Applied three effects to Hawke's Key.
Completed every side quest in the Vimmark Mountains prison tower.
Killed a genlock, genlock alpha, hurlock alpha, bronto, and deepstalker in the Vimmark Mountains.
Defeated Duke Prosper, with or without Tallis.
Disarmed the fire traps in Chateau Haine's vaults.
Evaded vault security in Chateau Haine.
Lured and killed an alpha wyvern near Chateau Haine.
Tallis joined the party.