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