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