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