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