Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
Finish the game while playing at the Insane difficulty level.
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.
Perform three successful ripostes in a row.
Finish the game by killing Letho.
Finish the game at any difficulty level.
Finish the game by sparing Letho.
Spare or save Saskia.
Kill the dragon.
Achieve character level 35.
Reach the Epilogue of the game.
Save Síle from dying in the unstable portal.
Leave Síle to die in the unstable portal.
Help Roche rescue Anais from the Kaedweni camp.
Kill three foes at once by performing a group finisher.
Finish all quests involing the destruction of monster nests.
Bow to Death at a Winter Shrine.
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 more than one opponent using a single exploding bomb.
Collect 10000 orens.
Enhance abilities using mutagens at least five times.
Kill 500 foes.
Acquire the Mutant ability.
Acquire the Sense of Magic ability.
Acquire the Combat Acumen ability.
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.
Achieve character level 10.
Bow before the Sun at a Summer Shrine.
Cut off a tentacle using the kayran trap.
Brew the ostmurk potion.
Find all additional information about the insane asylum's history.
Use alchemy to brew five potions or oils.
Roll five-of-a-kind at dice poker.
Hit Count Etcheverry using the ballista.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Intimidate someone.
Hire a craftsman to create an item.
Win an arm wrestling match, a dice poker game and a fist fight.
Finish the Prologue.
Drink one potion.
Kill 10 foes in a row without losing any Vitality.