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