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