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