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