Here is the full list of all 47 Castlevania: Lords of Shadow Ultimate Edition achievements.
Leave the Refectory with the Butcher's key
Acquire 20000 experience points
Gain access to the Vampire Castle
Buy 15 combos
Kill the Crow Witch
Acquire the power of the first Dark Lord
Get the Dark Gauntlet
Defeat the Ice Titan
Acquire 1000 experience points
Buy a combo
Survive the encounter with Laura
Acquire the power of the second Dark Lord
Persuade Baba Yaga to open a portal to the Necromancer area
Vanquish the Gravedigger
Acquire the power of the third Dark Lord
Defeat Satan and save the world
Open portal to dimensional prison
Defeat the Forgotten One
Complete all the trials for Chapter I
Complete all the trials for Chapter II
Complete all the trials for Chapter III
Complete all the trials for Chapter IV
Complete all the trials for Chapter V
Complete all the trials for Chapter VI
Complete all the trials for Chapter VII
Complete all the trials for Chapter VIII
Complete all the trials for Chapter IX
Complete all the trials for Chapter X
Complete all the trials for Chapter XI
Complete all the trials for Chapter XII
Complete all the trials for Chapter XIII
Complete all the trials for Chapter XIV
Complete all the trials
Gather all the 30 Shadow gems
Gather all the 30 Light gems
Gather all the 30 Life gems
Gather all hidden magic gems
Buy all the extra artwork
Finish all levels in Esquire difficulty
Finish all levels in Warrior difficulty
Finish all levels in Knight difficulty
Finish all levels in Paladin difficulty
Buy all combos
Acquire 100000 experience points
Find all the secret Brotherhood arks
Get 110% completion rate in all levels
Gather all the fingers of Frankenstein