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