Here is the full list of all 52 The Witcher 2: Assassins of Kings Enhanced Edition achievements.
Roll five-of-a-kind at dice poker.
Kill the dragon.
Help Roche rescue Anais from the Kaedweni camp.
Bow to Death at a Winter Shrine.
Stop Roche from killing Henselt.
Kill all the trolls in the game.
Relive all of Auckes's memories in Dethmold's vision.
Tour the camp with Zyvik.
Seduce Ves.
Defeat all opponents in the Kaedweni arena.
Cut off a tentacle using the kayran trap.
Bow before the Sun at a Summer Shrine.
Finish the game while playing at the Insane difficulty level.
Collect 10000 orens.
Hit Count Etcheverry using the ballista.
Kill a foe by deflecting his own arrow at him.
Perform three successful ripostes in a row.
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.
Help Iorveth find the dagger needed to free Saskia from the spell that holds her.
Achieve character level 35.
Complete Chapter 2.
Kill the draug.
Sneak through the lower camp without raising the alarm.
Kill three foes at once by performing a group finisher.
Acquire the Sense of Magic ability.
Enhance abilities using mutagens at least five times.
Acquire the Combat Acumen ability.
Acquire the Mutant ability.
Spare all trolls in the game.
Kill 500 foes.
Complete Chapter 1.
Kill more than one opponent using a single exploding bomb.
Craft a suit of armor from elements of the kayran's carapace.
Kill the kayran.
Achieve character level 10.
Brew the ostmurk potion.
Find all additional information about the insane asylum's history.
Successfully sneak through Loredo's garden and find the component of the kayran trap.
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.
Intimidate someone.
Finish the Prologue.
Drink one potion.
Kill 10 foes in a row without losing any Vitality.