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