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