Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Sneak through the lower camp without raising the alarm.
Kill all the trolls in the game.
Bow before the Sun at a Summer Shrine.
Kill a foe by deflecting his own arrow at him.
Bow to Death at a Winter Shrine.
Perform three successful ripostes in a row.
Finish the game while playing at the Insane difficulty level.
Achieve character level 35.
Spare or save Saskia.
Finish the game by sparing Letho.
Finish the game at any difficulty level.
Finish the game by killing Letho.
Kill the dragon.
Reach the Epilogue of the game.
Leave Síle to die in the unstable portal.
Save Síle from dying in the unstable portal.
Collect 10000 orens.
Help Roche rescue Anais from the Kaedweni camp.
Acquire the Sense of Magic ability.
Acquire the Mutant ability.
Finish all quests involing the destruction of monster nests.
Stop Roche from killing Henselt.
Complete Chapter 2.
Kill three foes at once by performing a group finisher.
Spare all trolls in the game.
Kill the draug.
Relive all of Auckes's memories in Dethmold's vision.
Acquire the Combat Acumen ability.
Enhance abilities using mutagens at least five times.
Kill 500 foes.
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Tour the camp with Zyvik.
Cut off a tentacle using the kayran trap.
Craft a suit of armor from elements of the kayran's carapace.
Complete Chapter 1.
Roll five-of-a-kind at dice poker.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Kill the kayran.
Achieve character level 10.
Brew the ostmurk potion.
Use alchemy to brew five potions or oils.
Find all additional information about the insane asylum's history.
Hire a craftsman to create an item.
Intimidate someone.
Finish the Prologue.
Win an arm wrestling match, a dice poker game and a fist fight.
Kill more than one opponent using a single exploding bomb.
Hit Count Etcheverry using the ballista.
Kill 10 foes in a row without losing any Vitality.
Drink one potion.