Here is the full list of all 26 DRONES AND RUINS achievements.
Started Drones & Ruins
Completed Chapter One on "Forgiving" Difficulty
Completed Chapter Two on "Forgiving" Difficulty
Completed Chapter Three on "Forgiving" Difficulty
Completed Chapter Four on "Forgiving" Difficulty
Completed Chapter Five on "Forgiving" Difficulty
Completed Chapter Six on "Forgiving" Difficulty
Completed Chapter One on "Respectful" Difficulty
Completed Chapter Two on "Respectful" Difficulty
Completed Chapter Three on "Respectful" Difficulty
Completed Chapter Four on "Respectful" Difficulty
Completed Chapter Five on "Respectful" Difficulty
Completed Chapter Six on "Respectful" Difficulty
Completed Chapter One on "Ruthless" Difficulty
Completed Chapter Two on "Ruthless" Difficulty
Completed Chapter Three on "Ruthless" Difficulty
Completed Chapter Four on "Ruthless" Difficulty
Completed Chapter Five on "Ruthless" Difficulty
Completed Chapter Six on "Ruthless" Difficulty
Completed Drones & Ruins on "Forgiving" Difficulty
Completed Drones & Ruins on "Respectful" Difficulty
Completed Drones & Ruins on "Ruthless" Difficulty
Drone Survived During BSOD
You Discovered and Tagged Your First Fallen Drone
You Discovered and Tagged All the Fallen Drones
Completed Drones & Ruins on "Kind" Difficulty