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