Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
Finish the game by killing Letho.
Finish the game at any difficulty level.
Finish the game by sparing Letho.
Reach the Epilogue of the game.
Spare or save Saskia.
Save Síle from dying in the unstable portal.
Leave Síle to die in the unstable portal.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Achieve character level 35.
Finish all quests involing the destruction of monster nests.
Kill three foes at once by performing a group finisher.
Bow to Death at a Winter Shrine.
Enhance abilities using mutagens at least five times.
Complete Chapter 2.
Kill the draug.
Acquire the Sense of Magic ability.
Acquire the Mutant ability.
Sneak through the lower camp without raising the alarm.
Acquire the Combat Acumen ability.
Craft a suit of armor from elements of the kayran's carapace.
Kill all the trolls in the game.
Kill 500 foes.
Cut off a tentacle using the kayran trap.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Bow before the Sun at a Summer Shrine.
Hit Count Etcheverry using the ballista.
Spare all trolls in the game.
Kill a foe by deflecting his own arrow at him.
Complete Chapter 1.
Find all additional information about the insane asylum's history.
Kill more than one opponent using a single exploding bomb.
Achieve character level 10.
Intimidate someone.
Kill the kayran.
Brew the ostmurk potion.
Hire a craftsman to create an item.
Win an arm wrestling match, a dice poker game and a fist fight.
Use alchemy to brew five potions or oils.
Finish the Prologue.
Kill 10 foes in a row without losing any Vitality.
Drink one potion.
Finish the game while playing at the Insane difficulty level.
Kill the dragon.
Collect 10000 orens.
Perform three successful ripostes in a row.
Defeat all opponents in the Kaedweni arena.
Seduce Ves.
Tour the camp with Zyvik.
Stop Roche from killing Henselt.
Help Roche rescue Anais from the Kaedweni camp.
Relive all of Auckes's memories in Dethmold's vision.
Roll five-of-a-kind at dice poker.