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