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