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