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