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