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