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.
Spare or save Saskia.
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.
Finish the game by sparing Letho.
Finish the game at any difficulty level.
Finish the game by killing Letho.
Achieve character level 35.
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.
Help Roche rescue Anais from the Kaedweni camp.
Finish all quests involing the destruction of monster nests.
Acquire the Mutant ability.
Complete Chapter 2.
Stop Roche from killing Henselt.
Kill three foes at once by performing a group finisher.
Kill all the trolls in the game.
Kill the draug.
Acquire the Sense of Magic ability.
Relive all of Auckes's memories in Dethmold's vision.
Kill 500 foes.
Enhance abilities using mutagens at least five times.
Kill a foe by deflecting his own arrow at him.
Acquire the Combat Acumen ability.
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Collect 10000 orens.
Tour the camp with Zyvik.
Complete Chapter 1.
Roll five-of-a-kind at dice poker.
Perform three successful ripostes in a row.
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.
Bow before the Sun at a Summer Shrine.
Find all additional information about the insane asylum's history.
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.
Use alchemy to brew five potions or oils.
Drink one potion.
Kill 10 foes in a row without losing any Vitality.
Hit Count Etcheverry using the ballista.
Kill more than one opponent using a single exploding bomb.