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