Here is the full list of all 11 Stoneshard: Prologue achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Kill Ascended Archon without letting him eat a single corpse.
Kill any enemy while experiencing Bad Trip.
Complete the Prologue.
Collect and read all 5 diary pages.
Kill Ascended Archon.
Die during the tutorial
Equip an item to every slot. Ring and amulet slots doesn’t count.
Have your health reduced to 1 point, survive and restore it back to at least 50%.
Kill at least one vampire of every type.
Complete the tutorial.
Use Ether Inhaler.