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