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