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