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