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