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.
Craft a suit of armor from elements of the kayran's carapace.
Brew the ostmurk potion.
Kill more than one opponent using a single exploding bomb.
Seduce Ves.
Relive all of Auckes's memories in Dethmold's vision.
Hit Count Etcheverry using the ballista.
Spare or save Saskia.
Perform three successful ripostes in a row.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Drink one potion.
Finish the game by sparing Letho.
Leave Síle to die in the unstable portal.
Help Roche rescue Anais from the Kaedweni camp.
Defeat all opponents in the Kaedweni arena.
Tour the camp with Zyvik.
Finish the game at any difficulty level.
Finish the game by killing Letho.
Reach the Epilogue of the game.
Kill the dragon.
Achieve character level 35.
Save Síle from dying in the unstable portal.
Finish all quests involing the destruction of monster nests.
Acquire the Sense of Magic ability.
Kill three foes at once by performing a group finisher.
Acquire the Combat Acumen ability.
Enhance abilities using mutagens at least five times.
Complete Chapter 2.
Kill the draug.
Hire a craftsman to create an item.
Kill 500 foes.
Spare all trolls in the game.
Complete Chapter 1.
Achieve character level 10.
Kill the kayran.
Find all additional information about the insane asylum's history.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Use alchemy to brew five potions or oils.
Intimidate someone.
Win an arm wrestling match, a dice poker game and a fist fight.
Finish the Prologue.
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.
Acquire the Mutant ability.
Collect 10000 orens.
Kill a foe by deflecting his own arrow at him.
Stop Roche from killing Henselt.
Kill all the trolls in the game.
Roll five-of-a-kind at dice poker.
Bow before the Sun at a Summer Shrine.
Bow to Death at a Winter Shrine.