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