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