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