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