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