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