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