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