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