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