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