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