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