Here is the full list of all 50 The Witcher 2: Assassins of Kings (EU) achievements worth 1,000 gamerscore.
Finish the game while playing at the Dark difficulty level.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Roll five-of-a-kind at dice poker.
Sneak through the lower camp without raising the alarm.
Spare all trolls in the game.
Finish the game by sparing Letho.
Finish the game by killing Letho.
Finish the game at any difficulty level.
Spare or save Saskia.
Complete Chapter 3.
Kill the dragon.
Leave Síle to die in the unstable portal.
Save Síle from dying in the unstable portal.
Finish all quests involing the destruction of monster nests.
Achieve character level 35.
Help Roche rescue Anais from the Kaedweni camp.
Kill a foe by deflecting his own arrow at him.
Enhance abilities using mutagens at least five times.
Complete Chapter 2.
Stop Roche from killing Henselt.
Perform three successful ripostes in a row.
Kill three foes at once by performing a group finisher.
Kill all the trolls in the game.
Kill 500 foes.
Kill the draug.
Acquire the Sense of Magic ability.
Acquire the Mutant ability.
Acquire the Combat Acumen ability.
Relive all of Auckes's memories in Dethmold's vision.
Collect 10000 orens.
Survive your 30th fight in the Arena
Survive your 5th fight in the Arena
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Tour the camp with Zyvik.
Complete Chapter 1.
Craft a suit of armor from elements of the kayran's carapace.
Intimidate someone.
Cut off a tentacle using the kayran trap.
Achieve character level 10.
Kill the kayran.
Kill 10 foes in a row without losing any Vitality.
Find all additional information about the insane asylum's history.
Kill more than one opponent using a single exploding bomb.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Hire a craftsman to create an item.
Win an arm wrestling match, a dice poker game and a fist fight.
Complete the Prologue.
Use alchemy to brew five potions or oils.
Hit Count Etcheverry using the ballista.