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