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