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