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