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