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