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