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