Here is the full list of all 38 Dark Souls II: Scholar of the First Sin achievements worth 1,000 gamerscore.
Discover an ancient covenant
Inherit equipment from the head of Vengarl
Max-out devotion to covenant
Discover the covenant of the bloodthirsty
Discover the covenant of the protectors
See the ending
Discover the abysmal covenant
Defeat Vendrick
Acquire Ashen Mist Heart
Acquire the King's Ring
Discover the clangorous covenant
Defeat Looking Glass Knight
Light the primal bonfire in the Iron Keep
Discover a most brilliant covenant
Reinforce a weapon to its limit
Light the primal bonfire in Brightstone Cove Tseldora
Give Rosabeth of Melfia something to wear
Light the primal bonfire in the Black Gulch
Discover the covenant of rodents
Light the primal bonfire in Sinner's Rise
Defeat the Last Giant
Discover the covenant of the fittest
Discover the covenant of the meek
Reclaim flesh and set out as an Undead
Die for the first time
Earn all achievements
Learn all gestures
Learn all sorceries
Learn all miracles
Learn all pyromancies
Learn all hexes
Light all flames on the map in Majula
Increase the population of Majula
Inherit Benhart of Jugo's equipment
Inherit Captain Drummond's equipment
Inherit equipment from Lucatiel of Mirrah
Inherit Steady Hand McDuff's equipment
Inherit Laddersmith Gilligan's equipment