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