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