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