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