Here is the full list of all 19 Noblesse Oblige: Legacy of the Sorcerer Kings achievements.
Completed the Prelude.
Completed Chapter 1.
Completed Chapter 2.
Completed Chapter 3.
Completed Chapter 4.
Completed Chapter 5.
Completed Chapter 6.
Completed Chapter 7.
Invested in a proposal.
Obtained the Ars Athanasia.
Ensured the safety of Delphin Pass.
Obtained a 50-loyalty skill upgrade.
Reduced an enemy's HP from 100% to 0 in a single attack.
Forged a piece of custom equipment.
Enjoyed a perfectly brewed pot of tea.
Took the crown's due from a traitor's armory.
Completed Chapter 8.