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