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