Full list of all 54 Dungeon Siege III achievements worth 1,250 gamerscore. It takes around 35-40 hours to unlock all of the achievements in the base game.
The base game contains 44 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 10 achievements worth 250 Gamerscore.
You reached level 20 as Reinhart.
You spoke to the Radiant Youth in the Mournweald.
You defeated the archon, Rajani.
You survived a journey through the Eastern Swamp.
You have gathered a full party of Legion descendants.
You've paraded about in nothing but rare items.
You bested Rajani without needing to heal yourself.
You have completed the main quest as Katarina.
You completed your quest, plus all other secondary quests in the game.
You achieved at least one level of influence with all three of your companions.
You reached level 20 as Katarina.
You have discovered 60 lore entries in one adventure.
Playing co-op as Anjali and Katarina, you defeated a boss.
You have disagreed on dialogue choices 20 times in one session.
You have agreed on dialogue choices 20 times in one session.
You completed Dungeon Siege III at the highest difficulty level.
You have completed the main quest as Lucas.
You achieved the highest possible influence with one of your companions.
You have completed the main quest as Anjali.
You have achieved the maximum level.
You have restored the Legion and saved the land of Ehb.
You defeated the reborn god without needing to be revived by a companion.
You stormed the Spire and defeated Jeyne Kassynder.
Force Jeyne to flee before defeating her handmaids.
You freed all the prisoners in the Spire.
You reached level 20 as Lucas.
Over your career, you have sustained at least 100,000 points of damage.
Playing co-op as Lucas and Reinhart, you defeated a boss.
You and a friend have played for three hours in one session.
You decided that Gunderic Manor should remain in Legion hands.
You broke the siege of Glitterdelve and saved Queen Roslyn.
You have shown unwavering support to the Crown.
You forged an alliance between Stonebridge and the 10th Legion.
During your fight against the Dapper Old Gent, you destroyed 50 of his Automatons.
You reached level 20 as Anjali.
You ceded control of Gunderic Manor to Leona.
Complete the game as Reinhart.
Sell 100,000 coins worth of items.
Win an encounter with a boss opponent using only your starting equipment.
Complete the game as a member of a four-player party.
Be part of a conversation wherein four players are all in agreement on what to say.
Be part of a conversation wherein four players all disagree on what to say.
Join someone's game and use an empowered Defensive Ability.
Achieve a level-up in a four-player game.
You spoke to the Lamasu.
You defeated High Priest Molochi.
You performed the ritual and gained access to the Agallan Vault.
You defeated the Giant Sand Worm.
You lit the sacred flames at all three desert shrines.
You learned the recitation in the Temple of Azunai.
You collected the sacred oil in Sandspring Cavern.
You met Eleanor, de facto leader of the Abbey of St. Hiram.
You respecced your character.
You survived your first encounter with the undead in the desert.