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