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