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