Blue Archive CODE BOX Event (Stealth Stage 9) (True SCHALE Sensei/Big Boss Run)

FTWDK: Big Boss Run means you must complete a Stealth Stage without ever getting caught, lose a life and use a checkpoint. (NOD To: MGS Big Boss Runs) Again, Another Hard Level, For the first and 2nd part, Don't Stop Running, now for the last part, you can either pass through it, or take out the drones.