Here is the full list of all 16 Sabres of Infinity achievements.
You completed the story with high cynicism and high mercy.
Complete the story with a character above the age of 30.
You completed the story with high idealism and high ruthlessness.
Meet one officer from each of Tierra's five duchies.
You rode at the head of a desperate charge in a great battle.
You chose to relieve yourself of your duties after an act of grave dishonour.
You were murdered by your own subordinates.
You died a heroic death in a great battle.
You employed hand grenades in an attack.
Win every decoration in a single playthrough and end the story with a high reputation.
You have obtained a knighthood.
You defended a seemingly hopeless position in a great battle.
Win every decoration.
You bluffed a superior force into surrendering without a fight.
You exposed the atrocities of a fellow Tierran officer.
Be decorated for your deeds in battle.