Army of Me Badge
You don't understand the math behind it, but you're pretty sure you're equal to or greater than eight of yourself.
How to Get
Badge awarded for completion of the Test Out Your Clones mission from Leonard. When you enter the Mission, you encounter an NPC named Dr. Higgins. Clicking on him will engage branching dialogue. You must select "Send out all 8 of the Clones", and verify your choice. The Badge will award upon defeat of the final clone.
As a Flashback arc, you must complete the first mission of "Good Villains Never Die" in the Undesirable (Level 25-29) section with the settings noted above.