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