Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
Finish the game by sparing Letho.
Spare or save Saskia.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Sneak through the lower camp without raising the alarm.
Spare all trolls in the game.
Bow before the Sun at a Summer Shrine.
Hit Count Etcheverry using the ballista.
Enhance abilities using mutagens at least five times.
Achieve character level 35.
Collect 10000 orens.
Finish the game while playing at the Insane difficulty level.
Finish the game at any difficulty level.
Finish the game by killing Letho.
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.
Acquire the Sense of Magic ability.
Roll five-of-a-kind at dice poker.
Bow to Death at a Winter Shrine.
Complete Chapter 2.
Stop Roche from killing Henselt.
Relive all of Auckes's memories in Dethmold's vision.
Kill three foes at once by performing a group finisher.
Kill 500 foes.
Kill all the trolls in the game.
Acquire the Combat Acumen ability.
Kill the draug.
Use alchemy to brew five potions or oils.
Kill a foe by deflecting his own arrow at him.
Craft a suit of armor from elements of the kayran's carapace.
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Win an arm wrestling match, a dice poker game and a fist fight.
Tour the camp with Zyvik.
Complete Chapter 1.
Find all additional information about the insane asylum's history.
Perform three successful ripostes in a row.
Intimidate someone.
Achieve character level 10.
Kill the kayran.
Cut off a tentacle using the kayran trap.
Kill more than one opponent using a single exploding bomb.
Brew the ostmurk potion.
Hire a craftsman to create an item.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Finish the Prologue.
Drink one potion.
Kill 10 foes in a row without losing any Vitality.