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