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