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.
Finish the game by killing Letho.
Leave Síle to die in the unstable portal.
Kill the dragon.
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.
Kill three foes at once by performing a group finisher.
Enhance abilities using mutagens at least five times.
Acquire the Mutant ability.
Acquire the Combat Acumen ability.
Acquire the Sense of Magic ability.
Finish all quests involing the destruction of monster nests.
Bow before the Sun at a Summer Shrine.
Stop Roche from killing Henselt.
Bow to Death at a Winter Shrine.
Complete Chapter 2.
Spare all trolls in the game.
Kill the draug.
Relive all of Auckes's memories in Dethmold's vision.
Kill 500 foes.
Kill a foe by deflecting his own arrow at him.
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Tour the camp with Zyvik.
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.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Brew the ostmurk potion.
Find all additional information about the insane asylum's history.
Use alchemy to brew five potions or oils.
Hire a craftsman to create an item.
Roll five-of-a-kind at dice poker.
Intimidate someone.
Finish the Prologue.
Win an arm wrestling match, a dice poker game and a fist fight.
Hit Count Etcheverry using the ballista.
Kill more than one opponent using a single exploding bomb.
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.
Collect 10000 orens.
Perform three successful ripostes in a row.
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.