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