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