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