Instructions
Punch and kick Scorpion with your regular melee attacks. He will move from the ground to the cables above once his health hits a certain point.
Dodge Scorpion's blasts and wait until he hops on the cable nearest you. Double-jump and press your attack buttons -- if Scorpion is within range, you'll automatically dash to him and deliver a few blows, hopefully causing him to fall.
Repeat your attacks in the cables until Scorpion's health drops to near zero. At this point, the final sequence of the battle will begin.
Follow the prompt over Scorpion's head to grab him. Use your dodge ability to slow time. Follow the on-screen prompts to aim Scorpion's tail at a nearby generator. Shoot every generator to proceed to the next phase of the fight.
Follow the on-screen prompts to climb to the top of the bridge. Once there, you can destroy the Scorpion's mind control unit and end the fight.