Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
Finish the game by sparing Letho.
Finish the game at any difficulty level.
Finish the game by killing Letho.
Spare or save Saskia.
Kill the dragon.
Reach the Epilogue of the game.
Save Síle from dying in the unstable portal.
Leave Síle to die in the unstable portal.
Help Roche rescue Anais from the Kaedweni camp.
Achieve character level 35.
Finish all quests involing the destruction of monster nests.
Collect 10000 orens.
Complete Chapter 2.
Stop Roche from killing Henselt.
Spare all trolls in the game.
Kill the draug.
Relive all of Auckes's memories in Dethmold's vision.
Kill 500 foes.
Acquire the Mutant ability.
Enhance abilities using mutagens at least five times.
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Tour the camp with Zyvik.
Acquire the Sense of Magic ability.
Complete Chapter 1.
Craft a suit of armor from elements of the kayran's carapace.
Kill the kayran.
Cut off a tentacle using the kayran trap.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Brew the ostmurk potion.
Bow before the Sun at a Summer Shrine.
Find all additional information about the insane asylum's history.
Kill more than one opponent using a single exploding bomb.
Hire a craftsman to create an item.
Use alchemy to brew five potions or oils.
Win an arm wrestling match, a dice poker game and a fist fight.
Finish the Prologue.
Intimidate someone.
Hit Count Etcheverry using the ballista.
Drink one potion.
Roll five-of-a-kind at dice poker.
Kill three foes at once by performing a group finisher.
Achieve character level 10.
Kill 10 foes in a row without losing any Vitality.
Perform three successful ripostes in a row.
Acquire the Combat Acumen ability.
Kill a foe by deflecting his own arrow at him.
Finish the game while playing at the Insane difficulty level.
Kill all the trolls in the game.
Sneak through the lower camp without raising the alarm.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Bow to Death at a Winter Shrine.