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