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