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Player 5 (3rd)

Action 1: Search the car. Roll 2 = fail. Roll 5 to find a Runner!
Action 2: Attack the Runner using the CZ-550 (allowed since you are the ONLY player in the space). Roll 6 to kill the found Runner.
Action 3: Attack the Walker to the North with the CZ-550. Roll 5 to blast the Walker to pieces!

Amazing dude!!