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