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