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