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