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