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