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