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