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