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