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