Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
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.
Enhance abilities using mutagens at least five times.
Complete Chapter 2.
Kill three foes at once by performing a group finisher.
Spare all trolls in the game.
Acquire the Combat Acumen ability.
Kill the draug.
Kill 500 foes.
Relive all of Auckes's memories in Dethmold's vision.
Defeat all opponents in the Kaedweni arena.
Craft a suit of armor from elements of the kayran's carapace.
Kill a foe by deflecting his own arrow at him.
Complete Chapter 1.
Achieve character level 10.
Kill the kayran.
Drink one potion.
Hire a craftsman to create an item.
Find all additional information about the insane asylum's history.
Brew the ostmurk potion.
Intimidate someone.
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.
Finish the game while playing at the Insane difficulty level.
Cut off a tentacle using the kayran trap.
Achieve character level 35.
Acquire the Mutant ability.
Acquire the Sense of Magic ability.
Use alchemy to brew five potions or oils.
Kill more than one opponent using a single exploding bomb.
Collect 10000 orens.
Perform three successful ripostes in a row.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
Seduce Ves.
Tour the camp with Zyvik.
Stop Roche from killing Henselt.
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.
Save Síle from dying in the unstable portal.
Spare or save Saskia.
Finish the game by sparing Letho.
Roll five-of-a-kind at dice poker.
Bow before the Sun at a Summer Shrine.
Bow to Death at a Winter Shrine.