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