Here is the full list of all 41 Divinity II: Ego Draconis achievements worth 1,000 gamerscore.
You met Damian.
You have obtained the key to the Maxos Temple.
You have found a true Dragon: the Patriarch.
You correctly answered all of the questions about Lord Lovis.
You have killed Charlie the goblin.
You have cured blindness.
Bring to justice all of Rivellon's most wanted criminals.
You have found Adah and Mahalath's secret cave.
You have finished the game.
You have reached the Hall of Echoes.
You have obtained the shield that will protect you in the Hall of Echoes.
You have discovered Aleroth.
You have found Michael's raft.
You have charmed an item.
You have found the seal that will open the gate to the Hall of Echoes.
Upgrade all your Battle Tower platforms to their maximal potential.
You have destroyed all of Damian's Flying Fortresses.
You have reached an epic level.
You have shown you are either utterly good or evil in Bellegar's cave.
You have read the mind of the three Gremory siblings.
You have discovered the Orobas Fjords.
You have morphed into a Dragon.
You have found the spell that will reveal the Hall of Echoes.
You have made use of your skills trainer.
You have sent one of your runners on a mission.
You have created a potion.
You have summoned your creature.
You have used the Dragon Stone.
You have destroyed Damian's armada and successfully protected your Battle Tower.
You have made it out of the Maxos Temple.
You have found the book that will lead you to the Hall of Echoes.
You have gained entry to the Maxos Temple.
You have killed the Killer Bunny.
You scared away the fortune teller.
You have enchanted an item.
You have killed Casper.
You have traded with someone.
You have leveled up. Congratulations!
You finished Farglow. Happy hunting!
You have read someone's mind.
You have made use of an illusionist's services.