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