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