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