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