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