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