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