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