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